diff --git a/django/contrib/admin/widgets.py b/django/contrib/admin/widgets.py
index 0b66c7de1d..2103788de9 100644
--- a/django/contrib/admin/widgets.py
+++ b/django/contrib/admin/widgets.py
@@ -37,7 +37,7 @@ class FilteredSelectMultiple(forms.SelectMultiple):
         self.is_stacked = is_stacked
         super(FilteredSelectMultiple, self).__init__(attrs, choices)
 
-    def render(self, name, value, attrs=None, choices=()):
+    def render(self, name, value, attrs=None):
         if attrs is None:
             attrs = {}
         attrs['class'] = 'selectfilter'
@@ -46,7 +46,7 @@ class FilteredSelectMultiple(forms.SelectMultiple):
 
         attrs['data-field-name'] = self.verbose_name
         attrs['data-is-stacked'] = int(self.is_stacked)
-        output = super(FilteredSelectMultiple, self).render(name, value, attrs, choices)
+        output = super(FilteredSelectMultiple, self).render(name, value, attrs)
         return mark_safe(output)
 
 
diff --git a/django/forms/widgets.py b/django/forms/widgets.py
index df585a6a2f..3d7f711056 100644
--- a/django/forms/widgets.py
+++ b/django/forms/widgets.py
@@ -514,12 +514,12 @@ class Select(Widget):
         memo[id(self)] = obj
         return obj
 
-    def render(self, name, value, attrs=None, choices=()):
+    def render(self, name, value, attrs=None):
         if value is None:
             value = ''
         final_attrs = self.build_attrs(attrs, name=name)
         output = [format_html('<select{}>', flatatt(final_attrs))]
-        options = self.render_options(choices, [value])
+        options = self.render_options([value])
         if options:
             output.append(options)
         output.append('</select>')
@@ -541,11 +541,11 @@ class Select(Widget):
                            selected_html,
                            force_text(option_label))
 
-    def render_options(self, choices, selected_choices):
+    def render_options(self, selected_choices):
         # Normalize to strings.
         selected_choices = set(force_text(v) for v in selected_choices)
         output = []
-        for option_value, option_label in chain(self.choices, choices):
+        for option_value, option_label in self.choices:
             if isinstance(option_label, (list, tuple)):
                 output.append(format_html('<optgroup label="{}">', force_text(option_value)))
                 for option in option_label:
@@ -566,12 +566,12 @@ class NullBooleanSelect(Select):
                    ('3', ugettext_lazy('No')))
         super(NullBooleanSelect, self).__init__(attrs, choices)
 
-    def render(self, name, value, attrs=None, choices=()):
+    def render(self, name, value, attrs=None):
         try:
             value = {True: '2', False: '3', '2': '2', '3': '3'}[value]
         except KeyError:
             value = '1'
-        return super(NullBooleanSelect, self).render(name, value, attrs, choices)
+        return super(NullBooleanSelect, self).render(name, value, attrs)
 
     def value_from_datadict(self, data, files, name):
         value = data.get(name)
@@ -586,12 +586,12 @@ class NullBooleanSelect(Select):
 class SelectMultiple(Select):
     allow_multiple_selected = True
 
-    def render(self, name, value, attrs=None, choices=()):
+    def render(self, name, value, attrs=None):
         if value is None:
             value = []
         final_attrs = self.build_attrs(attrs, name=name)
         output = [format_html('<select multiple="multiple"{}>', flatatt(final_attrs))]
-        options = self.render_options(choices, value)
+        options = self.render_options(value)
         if options:
             output.append(options)
         output.append('</select>')
@@ -625,7 +625,7 @@ class ChoiceInput(SubWidget):
     def __str__(self):
         return self.render()
 
-    def render(self, name=None, value=None, attrs=None, choices=()):
+    def render(self, name=None, value=None, attrs=None):
         if self.id_for_label:
             label_for = format_html(' for="{}"', self.id_for_label)
         else:
diff --git a/docs/releases/1.10.txt b/docs/releases/1.10.txt
index 7a3643969b..92f7c1d8e6 100644
--- a/docs/releases/1.10.txt
+++ b/docs/releases/1.10.txt
@@ -483,6 +483,11 @@ Miscellaneous
 * The default error views now raise ``TemplateDoesNotExist`` if a nonexistent
   ``template_name`` is specified.
 
+* The unused ``choices`` keyword argument of the ``Select`` and
+  ``SelectMultiple`` widgets' ``render()`` method is removed. The ``choices``
+  argument of the ``render_options()`` method is also removed, making
+  ``selected_choices`` the first argument.
+
 .. _deprecated-features-1.10:
 
 Features deprecated in 1.10
diff --git a/tests/forms_tests/widget_tests/test_select.py b/tests/forms_tests/widget_tests/test_select.py
index 86ef355c62..185352cda3 100644
--- a/tests/forms_tests/widget_tests/test_select.py
+++ b/tests/forms_tests/widget_tests/test_select.py
@@ -10,14 +10,14 @@ from .base import WidgetTest
 
 
 class SelectTest(WidgetTest):
-    widget = Select()
+    widget = Select
     nested_widget = Select(choices=(
         ('outer1', 'Outer 1'),
         ('Group "1"', (('inner1', 'Inner 1'), ('inner2', 'Inner 2'))),
     ))
 
     def test_render(self):
-        self.check_html(self.widget, 'beatle', 'J', choices=self.beatles, html=(
+        self.check_html(self.widget(choices=self.beatles), 'beatle', 'J', html=(
             """<select name="beatle">
             <option value="J" selected="selected">John</option>
             <option value="P">Paul</option>
@@ -30,7 +30,7 @@ class SelectTest(WidgetTest):
         """
         If the value is None, none of the options are selected.
         """
-        self.check_html(self.widget, 'beatle', None, choices=self.beatles, html=(
+        self.check_html(self.widget(choices=self.beatles), 'beatle', None, html=(
             """<select name="beatle">
             <option value="J">John</option>
             <option value="P">Paul</option>
@@ -44,7 +44,7 @@ class SelectTest(WidgetTest):
         If the value corresponds to a label (but not to an option value), none
         of the options are selected.
         """
-        self.check_html(self.widget, 'beatle', 'John', choices=self.beatles, html=(
+        self.check_html(self.widget(choices=self.beatles), 'beatle', 'John', html=(
             """<select name="beatle">
             <option value="J">John</option>
             <option value="P">Paul</option>
@@ -59,7 +59,7 @@ class SelectTest(WidgetTest):
         """
         choices = [('0', '0'), ('1', '1'), ('2', '2'), ('3', '3'), ('0', 'extra')]
 
-        self.check_html(self.widget, 'choices', '0', choices=choices, html=(
+        self.check_html(self.widget(choices=choices), 'choices', '0', html=(
             """<select name="choices">
             <option value="0" selected="selected">0</option>
             <option value="1">1</option>
@@ -90,8 +90,8 @@ class SelectTest(WidgetTest):
         The value is compared to its str().
         """
         self.check_html(
-            self.widget, 'num', 2,
-            choices=[('1', '1'), ('2', '2'), ('3', '3')],
+            self.widget(choices=[('1', '1'), ('2', '2'), ('3', '3')]),
+            'num', 2,
             html=(
                 """<select name="num">
                 <option value="1">1</option>
@@ -101,8 +101,8 @@ class SelectTest(WidgetTest):
             ),
         )
         self.check_html(
-            self.widget, 'num', '2',
-            choices=[(1, 1), (2, 2), (3, 3)],
+            self.widget(choices=[(1, 1), (2, 2), (3, 3)]),
+            'num', '2',
             html=(
                 """<select name="num">
                 <option value="1">1</option>
@@ -112,8 +112,8 @@ class SelectTest(WidgetTest):
             ),
         )
         self.check_html(
-            self.widget, 'num', 2,
-            choices=[(1, 1), (2, 2), (3, 3)],
+            self.widget(choices=[(1, 1), (2, 2), (3, 3)]),
+            'num', 2,
             html=(
                 """<select name="num">
                 <option value="1">1</option>
@@ -162,25 +162,9 @@ class SelectTest(WidgetTest):
             </select>"""
         ))
 
-    def test_choices_constuctor_and_render(self):
-        """
-        If 'choices' is passed to both the constructor and render(), then
-        they'll both be in the output.
-        """
-        widget = Select(choices=[(1, 1), (2, 2), (3, 3)])
-        self.check_html(widget, 'num', 2, choices=[(4, 4), (5, 5)], html=(
-            """<select name="num">
-            <option value="1">1</option>
-            <option value="2" selected="selected">2</option>
-            <option value="3">3</option>
-            <option value="4">4</option>
-            <option value="5">5</option>
-            </select>"""
-        ))
-
     def test_choices_escaping(self):
         choices = (('bad', 'you & me'), ('good', mark_safe('you &gt; me')))
-        self.check_html(self.widget, 'escape', None, choices=choices, html=(
+        self.check_html(self.widget(choices=choices), 'escape', None, html=(
             """<select name="escape">
             <option value="bad">you &amp; me</option>
             <option value="good">you &gt; me</option>
@@ -189,8 +173,8 @@ class SelectTest(WidgetTest):
 
     def test_choices_unicode(self):
         self.check_html(
-            self.widget, 'email', 'ŠĐĆŽćžšđ',
-            choices=[('ŠĐĆŽćžšđ', 'ŠĐabcĆŽćžšđ'), ('ćžšđ', 'abcćžšđ')],
+            self.widget(choices=[('ŠĐĆŽćžšđ', 'ŠĐabcĆŽćžšđ'), ('ćžšđ', 'abcćžšđ')]),
+            'email', 'ŠĐĆŽćžšđ',
             html=(
                 """<select name="email">
                 <option value="\u0160\u0110\u0106\u017d\u0107\u017e\u0161\u0111" selected="selected">
diff --git a/tests/forms_tests/widget_tests/test_selectmultiple.py b/tests/forms_tests/widget_tests/test_selectmultiple.py
index 502aba3bf4..3430d68113 100644
--- a/tests/forms_tests/widget_tests/test_selectmultiple.py
+++ b/tests/forms_tests/widget_tests/test_selectmultiple.py
@@ -4,11 +4,11 @@ from .base import WidgetTest
 
 
 class SelectMultipleTest(WidgetTest):
-    widget = SelectMultiple()
+    widget = SelectMultiple
     numeric_choices = (('0', '0'), ('1', '1'), ('2', '2'), ('3', '3'), ('0', 'extra'))
 
     def test_render_selected(self):
-        self.check_html(self.widget, 'beatles', ['J'], choices=self.beatles, html=(
+        self.check_html(self.widget(choices=self.beatles), 'beatles', ['J'], html=(
             """<select multiple="multiple" name="beatles">
             <option value="J" selected="selected">John</option>
             <option value="P">Paul</option>
@@ -18,7 +18,7 @@ class SelectMultipleTest(WidgetTest):
         ))
 
     def test_render_multiple_selected(self):
-        self.check_html(self.widget, 'beatles', ['J', 'P'], choices=self.beatles, html=(
+        self.check_html(self.widget(choices=self.beatles), 'beatles', ['J', 'P'], html=(
             """<select multiple="multiple" name="beatles">
             <option value="J" selected="selected">John</option>
             <option value="P" selected="selected">Paul</option>
@@ -31,7 +31,7 @@ class SelectMultipleTest(WidgetTest):
         """
         If the value is None, none of the options are selected.
         """
-        self.check_html(self.widget, 'beatles', None, choices=self.beatles, html=(
+        self.check_html(self.widget(choices=self.beatles), 'beatles', None, html=(
             """<select multiple="multiple" name="beatles">
             <option value="J">John</option>
             <option value="P">Paul</option>
@@ -45,7 +45,7 @@ class SelectMultipleTest(WidgetTest):
         If the value corresponds to a label (but not to an option value), none
         of the options are selected.
         """
-        self.check_html(self.widget, 'beatles', ['John'], choices=self.beatles, html=(
+        self.check_html(self.widget(choices=self.beatles), 'beatles', ['John'], html=(
             """<select multiple="multiple" name="beatles">
             <option value="J">John</option>
             <option value="P">Paul</option>
@@ -58,7 +58,7 @@ class SelectMultipleTest(WidgetTest):
         """
         Multiple options with the same value can be selected (#8103).
         """
-        self.check_html(self.widget, 'choices', ['0'], choices=self.numeric_choices, html=(
+        self.check_html(self.widget(choices=self.numeric_choices), 'choices', ['0'], html=(
             """<select multiple="multiple" name="choices">
             <option value="0" selected="selected">0</option>
             <option value="1">1</option>
@@ -73,7 +73,7 @@ class SelectMultipleTest(WidgetTest):
         If multiple values are given, but some of them are not valid, the valid
         ones are selected.
         """
-        self.check_html(self.widget, 'beatles', ['J', 'G', 'foo'], choices=self.beatles, html=(
+        self.check_html(self.widget(choices=self.beatles), 'beatles', ['J', 'G', 'foo'], html=(
             """<select multiple="multiple" name="beatles">
             <option value="J" selected="selected">John</option>
             <option value="P">Paul</option>
@@ -85,7 +85,7 @@ class SelectMultipleTest(WidgetTest):
     def test_compare_string(self):
         choices = [('1', '1'), ('2', '2'), ('3', '3')]
 
-        self.check_html(self.widget, 'nums', [2], choices=choices, html=(
+        self.check_html(self.widget(choices=choices), 'nums', [2], html=(
             """<select multiple="multiple" name="nums">
             <option value="1">1</option>
             <option value="2" selected="selected">2</option>
@@ -93,7 +93,7 @@ class SelectMultipleTest(WidgetTest):
             </select>"""
         ))
 
-        self.check_html(self.widget, 'nums', ['2'], choices=choices, html=(
+        self.check_html(self.widget(choices=choices), 'nums', ['2'], html=(
             """<select multiple="multiple" name="nums">
             <option value="1">1</option>
             <option value="2" selected="selected">2</option>
@@ -101,7 +101,7 @@ class SelectMultipleTest(WidgetTest):
             </select>"""
         ))
 
-        self.check_html(self.widget, 'nums', [2], choices=choices, html=(
+        self.check_html(self.widget(choices=choices), 'nums', [2], html=(
             """<select multiple="multiple" name="nums">
             <option value="1">1</option>
             <option value="2" selected="selected">2</option>