Mensa International -  .

Mensa Education & Research Foundation (MERF) - - Charitable (501-C3) organization that is funded by American Mensa and other charitable donations.

Mensa Online Club - - Links, chat, and threaded messages for Mensans.

The Mensa Process - - Makes use of the intelligence and creativity of Mensa members to help companies develop new products, new promotional ideas and new business strategies.

Mensa Under Water - - SCUBA and apnea diving with Mensa (Europe.

Mensans of the World Circle - - A webring for Mensan's personal pages, local group pages, or any site which has an association with Mensa.