- Mar 2 Judith Wiesner, Austrian tennis player (World #12 1997; captain Austria's Federation Cup team 2001), born in Hallein Austria
- Mar 3 Dmitry Volkov, Soviet-Russian swimmer (1992 medley relay silver), born in Moscow, Russia, Soviet Union
- Mar 4 Kevin Johnson, American NBA player (Phoenix Suns) and politician, born in Sacramento, California
- Mar 5 Bob Halkidis, Canadian hockey player
- Mar 5 Michael Irvin, American Pro Football HOF wide receiver (Super Bowl 1992, 93, 95; Dallas Cowboys; 5 × Pro Bowl) and broadcaster (ESPN, NFL Network), born in Fort Lauderdale, Florida
- Mar 6 Cliff Meidl, American sprint kayak (Olympics 1996 & 2000), born in Manhattan Beach, California
- Mar 7 Jeff Feagles, American NFL punter (Arizona Cardinals), born in Anaheim, california
- Mar 7 Terry Carkner, Canadian NHL defenseman (Florida Panthers), born in Smiths Falls, Canada
- Mar 8 Laura McCabe, cross country skier (Olympics 1994)
- Mar 10 Michael Timlin, American MLB pitcher (Toronto Blue Jays), born in Midland, Texas
- Mar 11 John Thompson III, American basketball coach (Princeton, Georgetown 2004-17), born in Boston, Massachusetts
- Mar 11 Stéphane Demol, Belgian soccer central defender (38 caps; Anderlecht, Bologna, Porto, Toulouse, Standard Liège), born in Watermael-Boitsfort, Belgium (d. 2023)
- Mar 13 Tine Scheuer-Larsen, Danish tennis star, born in Ølstykke, Denmark
- Mar 14 Darcy Wakaluk, Canadian NHL goalie (Dallas Stars), born in Pincher Creek, Alberta
- Mar 14 Tertius Bosch, South African cricketing pace bowler
- Mar 16 Catarina Pollini, Italian European and WNBA basketball forward (Houston Comets - 1997; 12 x Italian League Champion), born in Vicenza, Italy
- Mar 16 Rodney Peete, NFL quarterback (Philadelphia Eagles)
- Mar 19 Andy Sinton, English footballer
- Mar 20 Blas Minor, Merced CA, pitcher (Seattle Mariners)
- Mar 20 Giulio Caravatta, CFL quarterback (BC Lions)
- Mar 21 Al Iafrate, American NHL defenseman (799 career NHL games, 152 goals, 311 assists for 463 points), born in Dearborn, Michigan
- Mar 21 Karen Lunn, Australian golfer (British Open 1993; LET Order of Merit 1993), born in Cowra, New South Wales
- Mar 21 Kenny Bräck, Swedish auto racer (Indy Racing League 1998; Indianapolis 500 1999), born in Arvika, Sweden
- Mar 21 Matthew Maynard, cricketer (big hitting Glamorgan & England player)
- Mar 22 Brian Shaw, American NBA guard and coach (Orlando Magic, SF Warriors), born in Oakland, California
- Mar 22 Sean Berry, American infielder (Houston Astros), born in Santa Monica, California
- Mar 23 Mike Remlinger, MLB pitcher (Cincinnati Reds), born in Middletown, New York
- Mar 25 Anton Rogan, Irish soccer defender (18 caps NI; Celtic, Sunderland, Oxford United, Millwall), born in Belfast, Northern Ireland
- Mar 25 David Hohl, American freestyle wrestler (Olympics-9-92, 96), born in Winnipeg, Manitoba
- Mar 25 Jeff Cross, American football defensive end (Pro Bowl 1990 Miami Dolphins), born in Blythe, California
Tom Glavine (58 years old)
Mar 25 American Baseball HOF pitcher (NL Cy Young Award 1991, 98; World Series MVP 1995; 10 x MLB All Star; Atlanta Braves, NY Mets), born in Concord, Massachusetts
- Mar 26 Wesley Walls, American College Football HOF tight end with Uni of Mississippi; Super Bowl XXIV SF 49ers; 5 × Pro Bowl; Carolina Panthers, born in Batesville, Mississippi
- Mar 27 Kate Donahoo, US judoka (Olympic-92), born in Las Vegas, Nevada
- Mar 28 Jason Garrett, American NFL quarterback (Dallas Cowboys), born in Abington Township, Pennsylvania
- Mar 28 Nathalie Herreman, French tennis star, born in Sainte-Adresse, France
- Mar 30 Efstratios Grivas, Greek chess grandmaster and author, born in Aigio, Greece
- Mar 31 Roger Black, English athlete (World C'ships gold 4 x 400m relay 1991, 97), born in Gosport, Hampshire,
About March 1966
How Old? 58 years old
Generation: Generation X
Leap Year: No
Baseball Players
Basketball Stars
Boxers
Footballers
NFL Stars
Tennis Champions