Baetoidea
{{Short description|Superfamily of mayflies}}
{{Automatic taxobox
| image = Cloeon dipterum - side (aka).jpg
| image_caption = Cloeon dipterum
| taxon = Baetoidea
}}
Baetoidea is a superfamily of mayflies, which probably includes the most primitive living species.
The following families are recognised:{{cite web |url=http://tolweb.org/tree?group=Ephemeroptera&contgroup=Pterygota |title=Ephemoptera: Mayflies |year=2002 |work=The Tree of Life Web Project |accessdate=2015-05-31}}