diff --git a/Doc/library/codecs.rst b/Doc/library/codecs.rst
index 86511602fa5a60..7e7377ea085c36 100644
--- a/Doc/library/codecs.rst
+++ b/Doc/library/codecs.rst
@@ -747,6 +747,9 @@ compatible with the Python codec registry.
 
       Writes the object's contents encoded to the stream.
 
+      .. versionchanged:: next
+         Returns the number of characters or bytes written to the stream.
+
 
    .. method:: writelines(list)
 
diff --git a/Lib/codecs.py b/Lib/codecs.py
index fc38e922257644..c80f55b5e78a15 100644
--- a/Lib/codecs.py
+++ b/Lib/codecs.py
@@ -378,7 +378,7 @@ def write(self, object):
         """ Writes the object's contents encoded to self.stream.
         """
         data, consumed = self.encode(object, self.errors)
-        self.stream.write(data)
+        return self.stream.write(data)
 
     def writelines(self, list):
 
diff --git a/Lib/test/test_codecs.py b/Lib/test/test_codecs.py
index 8c9a0972492294..f23789acf4330b 100644
--- a/Lib/test/test_codecs.py
+++ b/Lib/test/test_codecs.py
@@ -1985,6 +1985,11 @@ class StreamWriterTest(unittest.TestCase):
     def setUp(self):
         self.writer = codecs.getwriter('utf-8')
 
+    def test_write(self):
+        bio = io.BytesIO()
+        self.assertEqual(self.writer(bio).write("Hällo"), 6)
+        self.assertEqual(bio.getvalue(), b'H\xc3\xa4llo')
+
     def test_copy(self):
         f = self.writer(Queue(b''))
         with self.assertRaisesRegex(TypeError, 'StreamWriter'):
@@ -2006,6 +2011,12 @@ def setUp(self):
         self.reader = codecs.getreader('latin1')
         self.writer = codecs.getwriter('utf-8')
 
+    def test_write(self):
+        bio = io.BytesIO()
+        f = codecs.StreamReaderWriter(bio, self.reader, self.writer)
+        self.assertEqual(f.write("Hällo"), 6)
+        self.assertEqual(bio.getvalue(), b'H\xc3\xa4llo')
+
     def test_copy(self):
         f = codecs.StreamReaderWriter(Queue(b''), self.reader, self.writer)
         with self.assertRaisesRegex(TypeError, 'StreamReaderWriter'):
diff --git a/Misc/NEWS.d/next/Library/2025-05-26-12-44-40.gh-issue-134706.bcTycR.rst b/Misc/NEWS.d/next/Library/2025-05-26-12-44-40.gh-issue-134706.bcTycR.rst
new file mode 100644
index 00000000000000..41cffaa959658c
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2025-05-26-12-44-40.gh-issue-134706.bcTycR.rst
@@ -0,0 +1,3 @@
+:meth:`codecs.StreamWriter.write` and :meth:`!codecs.StreamReaderWriter.write`
+now correctly return the number of characters or bytes written instead of
+returning ``None``.