diff --git a/swift3/acl_handlers.py b/swift3/acl_handlers.py
index 2e1f2ee7..73ea71db 100644
--- a/swift3/acl_handlers.py
+++ b/swift3/acl_handlers.py
@@ -116,7 +116,7 @@ class BaseAclHandler(object):
         """
         General acl handling method.
         This method expects to call Request._get_response() in outside of
-        this method so that this method returns resonse only when sw_method
+        this method so that this method returns response only when sw_method
         is HEAD.
         """
 
@@ -278,7 +278,7 @@ class MultiUploadAclHandler(BaseAclHandler):
     """
     MultiUpload stuff requires acl checking just once for BASE container
     so that MultiUploadAclHandler extends BaseAclHandler to check acl only
-    when the verb defined. We should define tThe verb as the first step to
+    when the verb defined. We should define the verb as the first step to
     request to backend Swift at incoming request.
 
     Basic Rules:
diff --git a/swift3/controllers/bucket.py b/swift3/controllers/bucket.py
index 34f7d2bd..ed28bfc0 100644
--- a/swift3/controllers/bucket.py
+++ b/swift3/controllers/bucket.py
@@ -189,7 +189,7 @@ class BucketController(Controller):
                 raise exc_type, exc_value, exc_traceback
 
             if location != CONF.location:
-                # Swift3 cannot support multiple reagions now.
+                # Swift3 cannot support multiple regions currently.
                 raise InvalidLocationConstraint()
 
         resp = req.get_response(self.app)
diff --git a/swift3/controllers/multi_upload.py b/swift3/controllers/multi_upload.py
index c63f738b..c28b8c6b 100644
--- a/swift3/controllers/multi_upload.py
+++ b/swift3/controllers/multi_upload.py
@@ -255,7 +255,7 @@ class UploadsController(Controller):
             return obj_dict
 
         # uploads is a list consists of dict, {key, upload_id, last_modified}
-        # Note that pattern matcher willd drop whole segments objects like as
+        # Note that pattern matcher will drop whole segments objects like as
         # object_name/upload_id/1.
         pattern = re.compile('/[0-9]+$')
         uploads = [object_to_upload(obj) for obj in objects if
diff --git a/swift3/controllers/obj.py b/swift3/controllers/obj.py
index a5d6b9d4..d52cbd63 100644
--- a/swift3/controllers/obj.py
+++ b/swift3/controllers/obj.py
@@ -32,7 +32,7 @@ class ObjectController(Controller):
     def _gen_head_range_resp(self, req_range, resp):
         """
         Swift doesn't handle Range header for HEAD requests.
-        So, this mothod generates HEAD range response from HEAD response.
+        So, this method generates HEAD range response from HEAD response.
         S3 return HEAD range response, if the value of range satisfies the
         conditions which are described in the following document.
         - http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.35
diff --git a/swift3/controllers/service.py b/swift3/controllers/service.py
index 3ccdad9e..dea65396 100644
--- a/swift3/controllers/service.py
+++ b/swift3/controllers/service.py
@@ -38,7 +38,7 @@ class ServiceController(Controller):
         containers = filter(
             lambda item: validate_bucket_name(item['name']), containers)
 
-        # we don't keep the creation time of a backet (s3cmd doesn't
+        # we don't keep the creation time of a bucket (s3cmd doesn't
         # work without that) so we use something bogus.
         elem = Element('ListAllMyBucketsResult')
 
diff --git a/swift3/middleware.py b/swift3/middleware.py
index 651e2f90..f9393428 100644
--- a/swift3/middleware.py
+++ b/swift3/middleware.py
@@ -67,7 +67,7 @@ from swift.common.utils import get_logger, register_swift_info
 
 
 class Swift3Middleware(object):
-    """Swift3 S3 compatibility midleware"""
+    """Swift3 S3 compatibility middleware"""
     def __init__(self, app, conf, *args, **kwargs):
         self.app = app
         self.slo_enabled = conf['allow_multipart_uploads']
@@ -132,7 +132,7 @@ class Swift3Middleware(object):
             self.slo_enabled = False
             LOGGER.warning('swift3 middleware requires SLO middleware '
                            'to support multi-part upload, please add it '
-                           'in pipline')
+                           'in pipeline')
 
         if not conf.auth_pipeline_check:
             LOGGER.debug('Skip pipeline auth check.')
diff --git a/swift3/request.py b/swift3/request.py
index 38b50931..987ad9f3 100644
--- a/swift3/request.py
+++ b/swift3/request.py
@@ -396,7 +396,7 @@ class Request(swob.Request):
         if not self._timestamp:
             try:
                 if self._is_query_auth and 'Timestamp' in self.params:
-                    # If Timestamp speciied in query, it should be prior
+                    # If Timestamp specified in query, it should be prior
                     # to any Date header (is this right?)
                     timestamp = mktime(
                         self.params['Timestamp'], SIGV2_TIMESTAMP_FORMAT)
@@ -1215,7 +1215,7 @@ class S3AclRequest(Request):
             self, container, obj, headers)
         resp = acl_handler.handle_acl(app, method)
 
-        # possible to skip recalling get_resposne_acl if resp is not
+        # possible to skip recalling get_response_acl if resp is not
         # None (e.g. HEAD)
         if resp:
             return resp
diff --git a/swift3/subresource.py b/swift3/subresource.py
index a387631e..8a6b2599 100644
--- a/swift3/subresource.py
+++ b/swift3/subresource.py
@@ -186,7 +186,7 @@ class Grantee(object):
         elif type == 'emailAddress':
             raise S3NotImplemented()
         elif type == 'uri':
-            # retrun a subclass instance of Group class
+            # return a subclass instance of Group class
             subclass = get_group_subclass_from_uri(value)
             return subclass()
         else:
diff --git a/swift3/test/functional/s3_test_client.py b/swift3/test/functional/s3_test_client.py
index 2c2d0fd4..da203a97 100644
--- a/swift3/test/functional/s3_test_client.py
+++ b/swift3/test/functional/s3_test_client.py
@@ -97,7 +97,7 @@ class Connection(object):
         :param body: a string of data binary sent to S3 as a request body
         :param query: a string of HTTP query argument
 
-        :returns: a tuple of (int(status_code), headers dict, resposne body)
+        :returns: a tuple of (int(status_code), headers dict, response body)
         """
         response = \
             self.conn.make_request(method, bucket=bucket, key=obj,
diff --git a/swift3/test/functional/test_bucket.py b/swift3/test/functional/test_bucket.py
index 1b5007a7..2b8640c3 100644
--- a/swift3/test/functional/test_bucket.py
+++ b/swift3/test/functional/test_bucket.py
@@ -51,7 +51,7 @@ class TestSwift3Bucket(Swift3FunctionalTestCase):
         self.assertTrue(headers['content-type'] is not None)
         self.assertEqual(headers['content-length'], str(len(body)))
         # TODO; requires consideration
-        # self.assertEquasl(headers['transfer-encoding'], 'chunked')
+        # self.assertEqual(headers['transfer-encoding'], 'chunked')
 
         elem = fromstring(body, 'ListBucketResult')
         self.assertEqual(elem.find('Name').text, bucket)
@@ -100,7 +100,7 @@ class TestSwift3Bucket(Swift3FunctionalTestCase):
         self.assertTrue(headers['content-type'] is not None)
         self.assertEqual(headers['content-length'], str(len(body)))
         # TODO; requires consideration
-        # self.assertEquasl(headers['transfer-encoding'], 'chunked')
+        # self.assertEqual(headers['transfer-encoding'], 'chunked')
 
         # DELETE Bucket
         for obj in req_objects:
@@ -289,17 +289,17 @@ class TestSwift3Bucket(Swift3FunctionalTestCase):
         status, headers, body = \
             self.conn.make_request('HEAD', 'bucket+invalid')
         self.assertEqual(status, 400)
-        self.assertEqual(body, '')  # sanifty
+        self.assertEqual(body, '')  # sanity
 
         auth_error_conn = Connection(aws_secret_key='invalid')
         status, headers, body = \
             auth_error_conn.make_request('HEAD', 'bucket')
         self.assertEqual(status, 403)
-        self.assertEqual(body, '')  # sanifty
+        self.assertEqual(body, '')  # sanity
 
         status, headers, body = self.conn.make_request('HEAD', 'nothing')
         self.assertEqual(status, 404)
-        self.assertEqual(body, '')  # sanifty
+        self.assertEqual(body, '')  # sanity
 
     def test_delete_bucket_error(self):
         status, headers, body = \
diff --git a/swift3/test/functional/test_multi_upload.py b/swift3/test/functional/test_multi_upload.py
index 1a2f0312..dd08ef43 100644
--- a/swift3/test/functional/test_multi_upload.py
+++ b/swift3/test/functional/test_multi_upload.py
@@ -202,7 +202,7 @@ class TestSwift3MultiUpload(Swift3FunctionalTestCase):
 
         elem = fromstring(body, 'ListPartsResult')
 
-        # FIXME: COPY result drops mili/microseconds but GET doesn't
+        # FIXME: COPY result drops milli/microseconds but GET doesn't
         last_modified_gets = [p.find('LastModified').text
                               for p in elem.iterfind('Part')]
         self.assertEqual(
@@ -248,7 +248,7 @@ class TestSwift3MultiUpload(Swift3FunctionalTestCase):
             self.assertTrue(last_modified is not None)
             # TODO: sanity check
             #       (kota_) How do we check the sanity?
-            #       the last-modified header drops mili-seconds info
+            #       the last-modified header drops milli-seconds info
             #       by the constraint of the format.
             #       For now, we can do either the format check or round check
             # last_modified_from_xml = mktime(last_modified)
@@ -501,7 +501,7 @@ class TestSwift3MultiUpload(Swift3FunctionalTestCase):
                                    query=query)
         self.assertEqual(get_error_code(body), 'MalformedXML')
 
-        # with ivalid etag in xml
+        # with invalid etag in xml
         invalid_etag = 'invalid'
         xml = self._gen_comp_xml([invalid_etag])
         status, headers, body = \
@@ -613,7 +613,7 @@ class TestSwift3MultiUpload(Swift3FunctionalTestCase):
 
         elem = fromstring(body, 'ListPartsResult')
 
-        # FIXME: COPY result drops mili/microseconds but GET doesn't
+        # FIXME: COPY result drops milli/microseconds but GET doesn't
         last_modified_gets = [p.find('LastModified').text
                               for p in elem.iterfind('Part')]
         self.assertEqual(
@@ -630,7 +630,7 @@ class TestSwift3MultiUpload(Swift3FunctionalTestCase):
         status, headers, body = \
             self.conn.make_request('DELETE', bucket, key, query=query)
 
-        # sanities
+        # sanity checks
         self.assertEqual(status, 204)
         self.assertCommonResponseHeaders(headers)
         self.assertTrue('content-type' in headers)
diff --git a/swift3/test/functional/test_object.py b/swift3/test/functional/test_object.py
index 2e84cd07..636cc94a 100644
--- a/swift3/test/functional/test_object.py
+++ b/swift3/test/functional/test_object.py
@@ -100,7 +100,7 @@ class TestSwift3Object(Swift3FunctionalTestCase):
         self.assertEqual(status, 200)
         elem = fromstring(body, 'ListBucketResult')
 
-        # FIXME: COPY result drops mili/microseconds but GET doesn't
+        # FIXME: COPY result drops milli/microseconds but GET doesn't
         self.assertEqual(
             elem.find('Contents').find("LastModified").text.rsplit('.', 1)[0],
             last_modified_xml.rsplit('.', 1)[0])
@@ -207,19 +207,19 @@ class TestSwift3Object(Swift3FunctionalTestCase):
         status, headers, body = \
             auth_error_conn.make_request('HEAD', self.bucket, obj)
         self.assertEqual(status, 403)
-        self.assertEqual(body, '')  # sanifty
+        self.assertEqual(body, '')  # sanity
         self.assertEqual(headers['content-type'], 'application/xml')
 
         status, headers, body = \
             self.conn.make_request('HEAD', self.bucket, 'invalid')
         self.assertEqual(status, 404)
-        self.assertEqual(body, '')  # sanifty
+        self.assertEqual(body, '')  # sanity
         self.assertEqual(headers['content-type'], 'application/xml')
 
         status, headers, body = \
             self.conn.make_request('HEAD', 'invalid', obj)
         self.assertEqual(status, 404)
-        self.assertEqual(body, '')  # sanifty
+        self.assertEqual(body, '')  # sanity
         self.assertEqual(headers['content-type'], 'application/xml')
 
     def test_delete_object_error(self):
diff --git a/swift3/test/functional/test_service.py b/swift3/test/functional/test_service.py
index be6f3560..76a72526 100644
--- a/swift3/test/functional/test_service.py
+++ b/swift3/test/functional/test_service.py
@@ -34,7 +34,7 @@ class TestSwift3Service(Swift3FunctionalTestCase):
         self.assertCommonResponseHeaders(headers)
         self.assertTrue(headers['content-type'] is not None)
         # TODO; requires consideration
-        # self.assertEquasl(headers['transfer-encoding'], 'chunked')
+        # self.assertEqual(headers['transfer-encoding'], 'chunked')
 
         elem = fromstring(body, 'ListAllMyBucketsResult')
         buckets = elem.findall('./Buckets/Bucket')
diff --git a/swift3/test/unit/test_bucket.py b/swift3/test/unit/test_bucket.py
index 9b81c015..7b10a644 100644
--- a/swift3/test/unit/test_bucket.py
+++ b/swift3/test/unit/test_bucket.py
@@ -91,7 +91,7 @@ class TestSwift3Bucket(Swift3TestCase):
                                      'Date': self.get_date_header()})
         status, headers, body = self.call_swift3(req)
         self.assertEqual(status.split()[0], '404')
-        self.assertEqual(body, '')  # sanifty
+        self.assertEqual(body, '')  # sanity
 
     def test_bucket_HEAD_slash(self):
         req = Request.blank('/junk/',
@@ -470,7 +470,7 @@ class TestSwift3Bucket(Swift3TestCase):
 
     @s3acl
     def test_bucket_DELETE_error_while_segment_bucket_delete(self):
-        # An error occured while deleting segment objects
+        # An error occurred while deleting segment objects
         self.swift.register('DELETE', '/v1/AUTH_test/bucket+segments/lily',
                             swob.HTTPServiceUnavailable, {}, json.dumps([]))
         # overwrite default HEAD to return x-container-object-count
@@ -486,7 +486,7 @@ class TestSwift3Bucket(Swift3TestCase):
         self.assertEqual(status.split()[0], '503')
         called = [(method, path) for method, path, _ in
                   self.swift.calls_with_headers]
-        # Don't delete original bucket when error occured in segment container
+        # Don't delete original bucket when error occurred in segment container
         self.assertNotIn(('DELETE', '/v1/AUTH_test/bucket'), called)
 
     def _test_bucket_for_s3acl(self, method, account):
diff --git a/swift3/test/unit/test_middleware.py b/swift3/test/unit/test_middleware.py
index 05783236..068ccca9 100644
--- a/swift3/test/unit/test_middleware.py
+++ b/swift3/test/unit/test_middleware.py
@@ -810,7 +810,7 @@ class TestSwift3Middleware(Swift3TestCase):
         req.content_type = 'text/plain'
         status, headers, body = self.call_swift3(req)
         # FIXME: should this failed as 400 or pass via query auth?
-        # for now, 403 forbbiden for safety
+        # for now, 403 forbidden for safety
         self.assertEqual(status.split()[0], '403', body)
 
         # But if we are missing Signature in query param
diff --git a/swift3/test/unit/test_obj.py b/swift3/test/unit/test_obj.py
index f3d92910..3c294d38 100644
--- a/swift3/test/unit/test_obj.py
+++ b/swift3/test/unit/test_obj.py
@@ -130,32 +130,32 @@ class TestSwift3Obj(Swift3TestCase):
                             swob.HTTPUnauthorized, {}, None)
         status, headers, body = self.call_swift3(req)
         self.assertEqual(status.split()[0], '403')
-        self.assertEqual(body, '')  # sanifty
+        self.assertEqual(body, '')  # sanity
         self.swift.register('HEAD', '/v1/AUTH_test/bucket/object',
                             swob.HTTPForbidden, {}, None)
         status, headers, body = self.call_swift3(req)
         self.assertEqual(status.split()[0], '403')
-        self.assertEqual(body, '')  # sanifty
+        self.assertEqual(body, '')  # sanity
         self.swift.register('HEAD', '/v1/AUTH_test/bucket/object',
                             swob.HTTPNotFound, {}, None)
         status, headers, body = self.call_swift3(req)
         self.assertEqual(status.split()[0], '404')
-        self.assertEqual(body, '')  # sanifty
+        self.assertEqual(body, '')  # sanity
         self.swift.register('HEAD', '/v1/AUTH_test/bucket/object',
                             swob.HTTPPreconditionFailed, {}, None)
         status, headers, body = self.call_swift3(req)
         self.assertEqual(status.split()[0], '412')
-        self.assertEqual(body, '')  # sanifty
+        self.assertEqual(body, '')  # sanity
         self.swift.register('HEAD', '/v1/AUTH_test/bucket/object',
                             swob.HTTPServerError, {}, None)
         status, headers, body = self.call_swift3(req)
         self.assertEqual(status.split()[0], '500')
-        self.assertEqual(body, '')  # sanifty
+        self.assertEqual(body, '')  # sanity
         self.swift.register('HEAD', '/v1/AUTH_test/bucket/object',
                             swob.HTTPServiceUnavailable, {}, None)
         status, headers, body = self.call_swift3(req)
         self.assertEqual(status.split()[0], '500')
-        self.assertEqual(body, '')  # sanifty
+        self.assertEqual(body, '')  # sanity
 
     def test_object_HEAD(self):
         self._test_object_GETorHEAD('HEAD')
diff --git a/swift3/test/unit/test_s3_acl.py b/swift3/test/unit/test_s3_acl.py
index 14007693..4c5c423b 100644
--- a/swift3/test/unit/test_s3_acl.py
+++ b/swift3/test/unit/test_s3_acl.py
@@ -48,7 +48,7 @@ def s3acl(func=None, s3acl_only=False):
 
         def call_func(failing_point=''):
             try:
-                # For maintainancibility, we patch 204 status for every
+                # For maintainability, we patch 204 status for every
                 # get_container_info. if you want, we can rewrite the
                 # statement easily with nested decorator like as:
                 #
diff --git a/swift3/test/unit/test_utils.py b/swift3/test/unit/test_utils.py
index a4badeb1..0735cd96 100644
--- a/swift3/test/unit/test_utils.py
+++ b/swift3/test/unit/test_utils.py
@@ -87,13 +87,13 @@ class TestSwift3Utils(unittest.TestCase):
         # integer
         ts = utils.S3Timestamp(1)
         self.assertEqual(expected, ts.s3xmlformat)
-        # miliseconds unit should be floored
+        # milliseconds unit should be floored
         ts = utils.S3Timestamp(1.1)
         self.assertEqual(expected, ts.s3xmlformat)
         # float (microseconds) should be floored too
         ts = utils.S3Timestamp(1.000001)
         self.assertEqual(expected, ts.s3xmlformat)
-        # Bigger float (miliseconds) should be floored too
+        # Bigger float (milliseconds) should be floored too
         ts = utils.S3Timestamp(1.9)
         self.assertEqual(expected, ts.s3xmlformat)
 
diff --git a/swift3/utils.py b/swift3/utils.py
index 9b7c544b..bc726e54 100644
--- a/swift3/utils.py
+++ b/swift3/utils.py
@@ -161,13 +161,13 @@ def mktime(timestamp_str, time_format='%Y-%m-%dT%H:%M:%S'):
     mktime creates a float instance in epoch time really like as time.mktime
 
     the difference from time.mktime is allowing to 2 formats string for the
-    argumtent for the S3 testing usage.
+    argument for the S3 testing usage.
     TODO: support
 
     :param timestamp_str: a string of timestamp formatted as
                           (a) RFC2822 (e.g. date header)
                           (b) %Y-%m-%dT%H:%M:%S (e.g. copy result)
-    :param time_format: a string of format to parase in (b) process
+    :param time_format: a string of format to parse in (b) process
     :return : a float instance in epoch time
     """
     try: