Canada
BC - North Shore Mothers of Multiples, ON - Multiple Birth Families Association of Ottawa, ON - Toronto Parents of Multiple Births Associatio, ON - Triplets Quads and Quints Association
United Kingdom
Cheltenham Twins Group, Edinburgh Twins Club, Preston and Lancashire Twins and Multiples Club, Selsey and Manhood Twins Club, Twinsclub UK
United States
AL - Huntsville Area Mothers of Multiples Club, AZ - East Tucson Mothers of Multiples, CA - Movin' Up Moms of Multiples, CA - Santa Barbara Mothers of Multiples, CO - Darling Doubles and Multiples Too, FL - Lakeland Parents of Multiples Club, FL - Tampa Bay Area Mothers of Multiples, FL - Tampa Parents of Twins and Supertwins (T-POTS, FL - Volusia County Mothers of Twins and Triplets, GA - North Metro Mothers of Twins Club
ABC Club
The largest German organisation for families with higher multiple birth children, from triplets onwards.
Malta Multiple Connection
Multiple Connection is a Malta based support group offering support to families of twins, triplets and multiples on the Maltese islands.
National Organization of Mothers of Twins Clubs, I
Official site; a non-profit, nation-wide support group for parents of twins and higher order multiple birth children.
The Association of Finnish Triplet Families
Mostly in Finnish, but has an English section and lots of international links.
Twins Plus Singapore
Support group for parents of twins and other multiples in Singapore.