diff --git a/django/forms/fields.py b/django/forms/fields.py
index 0ee66a9db3..acff7a54a9 100644
--- a/django/forms/fields.py
+++ b/django/forms/fields.py
@@ -704,9 +704,6 @@ class URLField(CharField):
                 # Rebuild the url_fields list, since the domain segment may now
                 # contain the path too.
                 url_fields = split_url(urlunsplit(url_fields))
-            if not url_fields[2]:
-                # the path portion may need to be added before query params
-                url_fields[2] = '/'
             value = urlunsplit(url_fields)
         return value
 
diff --git a/docs/releases/1.8.txt b/docs/releases/1.8.txt
index ca67403f9e..326b58f412 100644
--- a/docs/releases/1.8.txt
+++ b/docs/releases/1.8.txt
@@ -173,7 +173,7 @@ Backwards incompatible changes in 1.8
 Miscellaneous
 ~~~~~~~~~~~~~
 
-* ...
+* ``URLField.to_python`` no longer adds a trailing slash to pathless URLs.
 
 .. _deprecated-features-1.8:
 
diff --git a/tests/forms_tests/tests/test_fields.py b/tests/forms_tests/tests/test_fields.py
index 454a8349d7..b06b34f26c 100644
--- a/tests/forms_tests/tests/test_fields.py
+++ b/tests/forms_tests/tests/test_fields.py
@@ -748,14 +748,14 @@ class FieldsTests(SimpleTestCase):
         self.assertWidgetRendersTo(f, '<input type="url" name="f" id="id_f" />')
         self.assertRaisesMessage(ValidationError, "'This field is required.'", f.clean, '')
         self.assertRaisesMessage(ValidationError, "'This field is required.'", f.clean, None)
-        self.assertEqual('http://localhost/', f.clean('http://localhost'))
-        self.assertEqual('http://example.com/', f.clean('http://example.com'))
-        self.assertEqual('http://example.com./', f.clean('http://example.com.'))
-        self.assertEqual('http://www.example.com/', f.clean('http://www.example.com'))
+        self.assertEqual('http://localhost', f.clean('http://localhost'))
+        self.assertEqual('http://example.com', f.clean('http://example.com'))
+        self.assertEqual('http://example.com.', f.clean('http://example.com.'))
+        self.assertEqual('http://www.example.com', f.clean('http://www.example.com'))
         self.assertEqual('http://www.example.com:8000/test', f.clean('http://www.example.com:8000/test'))
-        self.assertEqual('http://valid-with-hyphens.com/', f.clean('valid-with-hyphens.com'))
-        self.assertEqual('http://subdomain.domain.com/', f.clean('subdomain.domain.com'))
-        self.assertEqual('http://200.8.9.10/', f.clean('http://200.8.9.10'))
+        self.assertEqual('http://valid-with-hyphens.com', f.clean('valid-with-hyphens.com'))
+        self.assertEqual('http://subdomain.domain.com', f.clean('subdomain.domain.com'))
+        self.assertEqual('http://200.8.9.10', f.clean('http://200.8.9.10'))
         self.assertEqual('http://200.8.9.10:8000/test', f.clean('http://200.8.9.10:8000/test'))
         self.assertRaisesMessage(ValidationError, "'Enter a valid URL.'", f.clean, 'foo')
         self.assertRaisesMessage(ValidationError, "'Enter a valid URL.'", f.clean, 'http://')
@@ -768,7 +768,7 @@ class FieldsTests(SimpleTestCase):
         self.assertRaisesMessage(ValidationError, "'Enter a valid URL.'", f.clean, 'http://-invalid.com')
         self.assertRaisesMessage(ValidationError, "'Enter a valid URL.'", f.clean, 'http://inv-.alid-.com')
         self.assertRaisesMessage(ValidationError, "'Enter a valid URL.'", f.clean, 'http://inv-.-alid.com')
-        self.assertEqual('http://valid-----hyphens.com/', f.clean('http://valid-----hyphens.com'))
+        self.assertEqual('http://valid-----hyphens.com', f.clean('http://valid-----hyphens.com'))
         self.assertEqual('http://some.idn.xyz\xe4\xf6\xfc\xdfabc.domain.com:123/blah', f.clean('http://some.idn.xyzäöüßabc.domain.com:123/blah'))
         self.assertEqual('http://www.example.com/s/http://code.djangoproject.com/ticket/13804', f.clean('www.example.com/s/http://code.djangoproject.com/ticket/13804'))
         self.assertRaisesMessage(ValidationError, "'Enter a valid URL.'", f.clean, '[a')
@@ -787,8 +787,8 @@ class FieldsTests(SimpleTestCase):
         f = URLField(required=False)
         self.assertEqual('', f.clean(''))
         self.assertEqual('', f.clean(None))
-        self.assertEqual('http://example.com/', f.clean('http://example.com'))
-        self.assertEqual('http://www.example.com/', f.clean('http://www.example.com'))
+        self.assertEqual('http://example.com', f.clean('http://example.com'))
+        self.assertEqual('http://www.example.com', f.clean('http://www.example.com'))
         self.assertRaisesMessage(ValidationError, "'Enter a valid URL.'", f.clean, 'foo')
         self.assertRaisesMessage(ValidationError, "'Enter a valid URL.'", f.clean, 'http://')
         self.assertRaisesMessage(ValidationError, "'Enter a valid URL.'", f.clean, 'http://example')
@@ -798,25 +798,22 @@ class FieldsTests(SimpleTestCase):
     def test_urlfield_5(self):
         f = URLField(min_length=15, max_length=20)
         self.assertWidgetRendersTo(f, '<input id="id_f" type="url" name="f" maxlength="20" />')
-        self.assertRaisesMessage(ValidationError, "'Ensure this value has at least 15 characters (it has 13).'", f.clean, 'http://f.com')
-        self.assertEqual('http://example.com/', f.clean('http://example.com'))
-        self.assertRaisesMessage(ValidationError, "'Ensure this value has at most 20 characters (it has 38).'", f.clean, 'http://abcdefghijklmnopqrstuvwxyz.com')
+        self.assertRaisesMessage(ValidationError, "'Ensure this value has at least 15 characters (it has 12).'", f.clean, 'http://f.com')
+        self.assertEqual('http://example.com', f.clean('http://example.com'))
+        self.assertRaisesMessage(ValidationError, "'Ensure this value has at most 20 characters (it has 37).'", f.clean, 'http://abcdefghijklmnopqrstuvwxyz.com')
 
     def test_urlfield_6(self):
         f = URLField(required=False)
-        self.assertEqual('http://example.com/', f.clean('example.com'))
+        self.assertEqual('http://example.com', f.clean('example.com'))
         self.assertEqual('', f.clean(''))
-        self.assertEqual('https://example.com/', f.clean('https://example.com'))
+        self.assertEqual('https://example.com', f.clean('https://example.com'))
 
     def test_urlfield_7(self):
         f = URLField()
-        self.assertEqual('http://example.com/', f.clean('http://example.com'))
+        self.assertEqual('http://example.com', f.clean('http://example.com'))
         self.assertEqual('http://example.com/test', f.clean('http://example.com/test'))
-
-    def test_urlfield_8(self):
-        # ticket #11826
-        f = URLField()
-        self.assertEqual('http://example.com/?some_param=some_value', f.clean('http://example.com?some_param=some_value'))
+        self.assertEqual('http://example.com?some_param=some_value',
+                         f.clean('http://example.com?some_param=some_value'))
 
     def test_urlfield_9(self):
         f = URLField()