diff --git a/django/forms/fields.py b/django/forms/fields.py
index 62d68985c0..fd6900cc65 100644
--- a/django/forms/fields.py
+++ b/django/forms/fields.py
@@ -617,9 +617,9 @@ class EmailField(CharField):
     default_validators = [validators.validate_email]
 
     def __init__(self, **kwargs):
-        # The default maximum length of an email is 320 characters per RFC 3696
+        # The default maximum length of an email is 254 characters per RFC 5321/5322
         # section 3.
-        kwargs.setdefault("max_length", 320)
+        kwargs.setdefault("max_length", 254)
         super().__init__(strip=True, **kwargs)