diff --git a/Lib/tkinter/test/test_tkinter/test_images.py b/Lib/tkinter/test/test_tkinter/test_images.py
new file mode 100644
index 00000000000..e8ec604cc1c
--- /dev/null
+++ b/Lib/tkinter/test/test_tkinter/test_images.py
@@ -0,0 +1,341 @@
+import unittest
+import tkinter
+from tkinter import ttk
+from test import support
+from tkinter.test.support import requires_tcl
+
+support.requires('gui')
+
+
+class MiscTest(unittest.TestCase):
+
+    def setUp(self):
+        self.root = ttk.setup_master()
+
+    def test_image_types(self):
+        image_types = self.root.image_types()
+        self.assertIsInstance(image_types, tuple)
+        self.assertIn('photo', image_types)
+        self.assertIn('bitmap', image_types)
+
+    def test_image_names(self):
+        image_names = self.root.image_names()
+        self.assertIsInstance(image_names, tuple)
+
+
+class BitmapImageTest(unittest.TestCase):
+
+    @classmethod
+    def setUpClass(cls):
+        cls.testfile = support.findfile('python.xbm', subdir='imghdrdata')
+
+    def setUp(self):
+        self.root = ttk.setup_master()
+
+    def test_create_from_file(self):
+        image = tkinter.BitmapImage('::img::test', master=self.root,
+                                    foreground='yellow', background='blue',
+                                    file=self.testfile)
+        self.assertEqual(str(image), '::img::test')
+        self.assertEqual(image.type(), 'bitmap')
+        self.assertEqual(image.width(), 16)
+        self.assertEqual(image.height(), 16)
+        self.assertIn('::img::test', self.root.image_names())
+        del image
+        self.assertNotIn('::img::test', self.root.image_names())
+
+    def test_create_from_data(self):
+        with open(self.testfile, 'rb') as f:
+            data = f.read()
+        image = tkinter.BitmapImage('::img::test', master=self.root,
+                                    foreground='yellow', background='blue',
+                                    data=data)
+        self.assertEqual(str(image), '::img::test')
+        self.assertEqual(image.type(), 'bitmap')
+        self.assertEqual(image.width(), 16)
+        self.assertEqual(image.height(), 16)
+        self.assertIn('::img::test', self.root.image_names())
+        del image
+        self.assertNotIn('::img::test', self.root.image_names())
+
+    def assertEqualStrList(self, actual, expected):
+        self.assertIsInstance(actual, str)
+        self.assertEqual(self.root.splitlist(actual), expected)
+
+    def test_configure_data(self):
+        image = tkinter.BitmapImage('::img::test', master=self.root)
+        self.assertEqual(image['data'], '-data {} {} {} {}')
+        with open(self.testfile, 'rb') as f:
+            data = f.read()
+        image.configure(data=data)
+        self.assertEqualStrList(image['data'],
+                                ('-data', '', '', '', data.decode('ascii')))
+        self.assertEqual(image.width(), 16)
+        self.assertEqual(image.height(), 16)
+
+        self.assertEqual(image['maskdata'], '-maskdata {} {} {} {}')
+        image.configure(maskdata=data)
+        self.assertEqualStrList(image['maskdata'],
+                                ('-maskdata', '', '', '', data.decode('ascii')))
+
+    def test_configure_file(self):
+        image = tkinter.BitmapImage('::img::test', master=self.root)
+        self.assertEqual(image['file'], '-file {} {} {} {}')
+        image.configure(file=self.testfile)
+        self.assertEqualStrList(image['file'],
+                                ('-file', '', '', '',self.testfile))
+        self.assertEqual(image.width(), 16)
+        self.assertEqual(image.height(), 16)
+
+        self.assertEqual(image['maskfile'], '-maskfile {} {} {} {}')
+        image.configure(maskfile=self.testfile)
+        self.assertEqualStrList(image['maskfile'],
+                                ('-maskfile', '', '', '', self.testfile))
+
+    def test_configure_background(self):
+        image = tkinter.BitmapImage('::img::test', master=self.root)
+        self.assertEqual(image['background'], '-background {} {} {} {}')
+        image.configure(background='blue')
+        self.assertEqual(image['background'], '-background {} {} {} blue')
+
+    def test_configure_foreground(self):
+        image = tkinter.BitmapImage('::img::test', master=self.root)
+        self.assertEqual(image['foreground'],
+                         '-foreground {} {} #000000 #000000')
+        image.configure(foreground='yellow')
+        self.assertEqual(image['foreground'],
+                         '-foreground {} {} #000000 yellow')
+
+
+class PhotoImageTest(unittest.TestCase):
+
+    @classmethod
+    def setUpClass(cls):
+        cls.testfile = support.findfile('python.gif', subdir='imghdrdata')
+
+    def setUp(self):
+        self.root = ttk.setup_master()
+        self.wantobjects = self.root.wantobjects()
+
+    def create(self):
+        return tkinter.PhotoImage('::img::test', master=self.root,
+                                  file=self.testfile)
+
+    def colorlist(self, *args):
+        if tkinter.TkVersion >= 8.6 and self.wantobjects:
+            return args
+        else:
+            return tkinter._join(args)
+
+    def check_create_from_file(self, ext):
+        testfile = support.findfile('python.' + ext, subdir='imghdrdata')
+        image = tkinter.PhotoImage('::img::test', master=self.root,
+                                   file=testfile)
+        self.assertEqual(str(image), '::img::test')
+        self.assertEqual(image.type(), 'photo')
+        self.assertEqual(image.width(), 16)
+        self.assertEqual(image.height(), 16)
+        self.assertEqual(image['data'], '')
+        self.assertEqual(image['file'], testfile)
+        self.assertIn('::img::test', self.root.image_names())
+        del image
+        self.assertNotIn('::img::test', self.root.image_names())
+
+    def check_create_from_data(self, ext):
+        testfile = support.findfile('python.' + ext, subdir='imghdrdata')
+        with open(testfile, 'rb') as f:
+            data = f.read()
+        image = tkinter.PhotoImage('::img::test', master=self.root,
+                                   data=data)
+        self.assertEqual(str(image), '::img::test')
+        self.assertEqual(image.type(), 'photo')
+        self.assertEqual(image.width(), 16)
+        self.assertEqual(image.height(), 16)
+        self.assertEqual(image['data'], data if self.wantobjects
+                                        else data.decode('latin1'))
+        self.assertEqual(image['file'], '')
+        self.assertIn('::img::test', self.root.image_names())
+        del image
+        self.assertNotIn('::img::test', self.root.image_names())
+
+    def test_create_from_ppm_file(self):
+        self.check_create_from_file('ppm')
+
+    @unittest.skip('issue #21580')
+    def test_create_from_ppm_data(self):
+        self.check_create_from_data('ppm')
+
+    def test_create_from_pgm_file(self):
+        self.check_create_from_file('pgm')
+
+    @unittest.skip('issue #21580')
+    def test_create_from_pgm_data(self):
+        self.check_create_from_data('pgm')
+
+    def test_create_from_gif_file(self):
+        self.check_create_from_file('gif')
+
+    @unittest.skip('issue #21580')
+    def test_create_from_gif_data(self):
+        self.check_create_from_data('gif')
+
+    @requires_tcl(8, 6)
+    def test_create_from_png_file(self):
+        self.check_create_from_file('png')
+
+    @unittest.skip('issue #21580')
+    @requires_tcl(8, 6)
+    def test_create_from_png_data(self):
+        self.check_create_from_data('png')
+
+    @unittest.skip('issue #21580')
+    def test_configure_data(self):
+        image = tkinter.PhotoImage('::img::test', master=self.root)
+        self.assertEqual(image['data'], '')
+        with open(self.testfile, 'rb') as f:
+            data = f.read()
+        image.configure(data=data)
+        self.assertEqual(image['data'], data if self.wantobjects
+                                        else data.decode('latin1'))
+        self.assertEqual(image.width(), 16)
+        self.assertEqual(image.height(), 16)
+
+    def test_configure_format(self):
+        image = tkinter.PhotoImage('::img::test', master=self.root)
+        self.assertEqual(image['format'], '')
+        image.configure(file=self.testfile, format='gif')
+        self.assertEqual(image['format'], ('gif',) if self.wantobjects
+                                          else 'gif')
+        self.assertEqual(image.width(), 16)
+        self.assertEqual(image.height(), 16)
+
+    def test_configure_file(self):
+        image = tkinter.PhotoImage('::img::test', master=self.root)
+        self.assertEqual(image['file'], '')
+        image.configure(file=self.testfile)
+        self.assertEqual(image['file'], self.testfile)
+        self.assertEqual(image.width(), 16)
+        self.assertEqual(image.height(), 16)
+
+    def test_configure_gamma(self):
+        image = tkinter.PhotoImage('::img::test', master=self.root)
+        self.assertEqual(image['gamma'], '1.0')
+        image.configure(gamma=2.0)
+        self.assertEqual(image['gamma'], '2.0')
+
+    def test_configure_width_height(self):
+        image = tkinter.PhotoImage('::img::test', master=self.root)
+        self.assertEqual(image['width'], '0')
+        self.assertEqual(image['height'], '0')
+        image.configure(width=20)
+        image.configure(height=10)
+        self.assertEqual(image['width'], '20')
+        self.assertEqual(image['height'], '10')
+        self.assertEqual(image.width(), 20)
+        self.assertEqual(image.height(), 10)
+
+    def test_configure_palette(self):
+        image = tkinter.PhotoImage('::img::test', master=self.root)
+        self.assertEqual(image['palette'], '')
+        image.configure(palette=256)
+        self.assertEqual(image['palette'], '256')
+        image.configure(palette='3/4/2')
+        self.assertEqual(image['palette'], '3/4/2')
+
+    def test_blank(self):
+        image = self.create()
+        image.blank()
+        self.assertEqual(image.width(), 16)
+        self.assertEqual(image.height(), 16)
+        self.assertEqual(image.get(4, 6), self.colorlist(0, 0, 0))
+
+    def test_copy(self):
+        image = self.create()
+        image2 = image.copy()
+        self.assertEqual(image2.width(), 16)
+        self.assertEqual(image2.height(), 16)
+        self.assertEqual(image.get(4, 6), image.get(4, 6))
+
+    def test_subsample(self):
+        image = self.create()
+        image2 = image.subsample(2, 3)
+        self.assertEqual(image2.width(), 8)
+        self.assertEqual(image2.height(), 6)
+        self.assertEqual(image2.get(2, 2), image.get(4, 6))
+
+        image2 = image.subsample(2)
+        self.assertEqual(image2.width(), 8)
+        self.assertEqual(image2.height(), 8)
+        self.assertEqual(image2.get(2, 3), image.get(4, 6))
+
+    def test_zoom(self):
+        image = self.create()
+        image2 = image.zoom(2, 3)
+        self.assertEqual(image2.width(), 32)
+        self.assertEqual(image2.height(), 48)
+        self.assertEqual(image2.get(8, 18), image.get(4, 6))
+        self.assertEqual(image2.get(9, 20), image.get(4, 6))
+
+        image2 = image.zoom(2)
+        self.assertEqual(image2.width(), 32)
+        self.assertEqual(image2.height(), 32)
+        self.assertEqual(image2.get(8, 12), image.get(4, 6))
+        self.assertEqual(image2.get(9, 13), image.get(4, 6))
+
+    def test_put(self):
+        image = self.create()
+        image.put('{red green} {blue yellow}', to=(4, 6))
+        self.assertEqual(image.get(4, 6), self.colorlist(255, 0, 0))
+        self.assertEqual(image.get(5, 6),
+                         self.colorlist(0, 128 if tkinter.TkVersion >= 8.6
+                                           else 255, 0))
+        self.assertEqual(image.get(4, 7), self.colorlist(0, 0, 255))
+        self.assertEqual(image.get(5, 7), self.colorlist(255, 255, 0))
+
+        image.put((('#f00', '#00ff00'), ('#000000fff', '#ffffffff0000')))
+        self.assertEqual(image.get(0, 0), self.colorlist(255, 0, 0))
+        self.assertEqual(image.get(1, 0), self.colorlist(0, 255, 0))
+        self.assertEqual(image.get(0, 1), self.colorlist(0, 0, 255))
+        self.assertEqual(image.get(1, 1), self.colorlist(255, 255, 0))
+
+    def test_get(self):
+        image = self.create()
+        self.assertEqual(image.get(4, 6), self.colorlist(62, 116, 162))
+        self.assertEqual(image.get(0, 0), self.colorlist(0, 0, 0))
+        self.assertEqual(image.get(15, 15), self.colorlist(0, 0, 0))
+        self.assertRaises(tkinter.TclError, image.get, -1, 0)
+        self.assertRaises(tkinter.TclError, image.get, 0, -1)
+        self.assertRaises(tkinter.TclError, image.get, 16, 15)
+        self.assertRaises(tkinter.TclError, image.get, 15, 16)
+
+    def test_write(self):
+        image = self.create()
+        self.addCleanup(support.unlink, support.TESTFN)
+
+        image.write(support.TESTFN)
+        image2 = tkinter.PhotoImage('::img::test2', master=self.root,
+                                    format='ppm',
+                                    file=support.TESTFN)
+        self.assertEqual(str(image2), '::img::test2')
+        self.assertEqual(image2.type(), 'photo')
+        self.assertEqual(image2.width(), 16)
+        self.assertEqual(image2.height(), 16)
+        self.assertEqual(image2.get(0, 0), image.get(0, 0))
+        self.assertEqual(image2.get(15, 8), image.get(15, 8))
+
+        image.write(support.TESTFN, format='gif', from_coords=(4, 6, 6, 9))
+        image3 = tkinter.PhotoImage('::img::test3', master=self.root,
+                                    format='gif',
+                                    file=support.TESTFN)
+        self.assertEqual(str(image3), '::img::test3')
+        self.assertEqual(image3.type(), 'photo')
+        self.assertEqual(image3.width(), 2)
+        self.assertEqual(image3.height(), 3)
+        self.assertEqual(image3.get(0, 0), image.get(4, 6))
+        self.assertEqual(image3.get(1, 2), image.get(5, 8))
+
+
+tests_gui = (MiscTest, BitmapImageTest, PhotoImageTest,)
+
+if __name__ == "__main__":
+    support.run_unittest(*tests_gui)
diff --git a/Misc/NEWS b/Misc/NEWS
index 28cc34c4c11..d2ececedadb 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -525,6 +525,8 @@ Documentation
 Tests
 -----
 
+- Issue #21605: Added tests for Tkinter images.
+
 - Issue #21493: Added test for ntpath.expanduser().  Original patch by
   Claudiu Popa.