•
Mark Alarie (born 1963), American basketball player •
Mark Allen (snooker player), Northern Irish snooker player •
Mark Andrews (American football) (born 1996), American football player •
Mark Beck (born 1994), footballer •
Mark Belanger (1944–1998), American baseball player •
Mark Bell (ice hockey), Canadian ice hockey player •
Mark Bellhorn, American baseball player •
Mark Berger (judoka), Canadian Olympic silver & bronze heavyweight judoka •
Mark Bolding (born 1970), Canadian ice hockey coach •
Mark van Bommel, Dutch footballer •
Mark Bone (born 1960), New Zealand swimming instructor and former national coach •
Mark Bott (born 1986), English cricketer •
Mark Boucher, South African cricketer •
Mark Bresciano, Australian soccer player •
Mark Brunell, American football player •
Mark Buehrle, American baseball player • Mark Calaway, (born 1965), American professional wrestler who uses the stage name "
The Undertaker" •
Mark Canha (born 1989), American baseball player •
Mark Casale, American football player •
Mark Cavendish, professional racing cyclist •
Mark Chamberlain (born 1999), English professional boxer •
Mark Chatfield, American breaststroke swimmer •
Mark Clear (born 1956), American baseball player •
Mark Cohon, Canadian Football League Commissioner •
Mark Crow, American basketball player •
Mark Dale, English cricketer •
Mark Dean (swimmer), American swimmer •
Mark DeRosa, American baseball player •
Mark de Vries (born 1975), Dutch footballer •
Mark Didio, American football player •
Mark Dismore, American indycar driver •
Mark Du Plessis (born 1975), horse racing jockey •
Mark Dusbabek, American football player •
Mark Donohue, American racing driver •
Mark Ealham, English cricketer •
Mark Ellis (baseball), American baseball player •
Mark Evans (rower), Canadian rower •
Mark Ferreira (born 1967), former professional tennis player from India •
Mark Few (born 1962), American basketball coach •
Mark Fidrych (1954–2009), American baseball player •
Mark-Jan Fledderus (born 1982), Dutch footballer •
Mark Forsythe, Northern Irish long jumper •
Mark Friedman (born 1995), Canadian National Hockey League player •
Mark Fynn (born 1985), Zimbabwean tennis player •
Mark Garner, Australian track and field sprinter •
Mark Gilbert, American Major League Baseball player, and US Ambassador •
Mark Gilbert (American football) (born 1997), American football player •
Mark Giordano, Canadian ice hockey player •
Mark Gorski, American track cyclist and cycling manager •
Mark Gronowski (born 2001), American football player •
Mark Gurr (born 1966), Zimbabwean tennis player •
Mark Guy, American football player •
Mark Henry, (born 1971), American weightlifter and professional wrestler •
Mark Hughes, Welsh football manager and former player •
Mark Huizinga (born 1973), Dutch judoka •
Mark Hunt, New Zealand mixed martial artist •
Mark Hurst (born 21 October 1995), former Scottish footballer •
Mark Inglis (born 1959), New Zealand mountaineer •
Mark Ingram Sr. (born 1965), American football player •
Mark Ingram II (born 1989), American football player •
Mark Jindrak, American professional wrestler •
Mark Kafentzis, American football player •
Mark Kellar, American football player •
Mark Kennedy (footballer, born 1976), Irish footballer •
Mark Koenig (1904–1993), American baseball player •
Mark Kondratiuk (born 2003), Russian figure skater •
Mark Lapidus (born 1995), Estonian chess player •
Mark Lazarus (born 1938), English soccer player •
Mark Lomuket (born 1999), Kenyan long-distance runner •
Mark Lyons, American basketball player in Israeli Basketball Premier League •
Mark Major, Canadian ice hockey player •
Mark Malyar (born 2000), Israeli Paralympic champion and world champion
para swimmer •
Mark Mangino (born 1956), American football coach •
Mark Martin (born 1959), NASCAR driver •
Mark McGwire (born 1963), American baseball player •
Mark Messier (born 1961), Canadian retired hockey player •
Mark Midler (1931–2012), Soviet two-time Olympic champion foil fencer •
Mark Mulder, American baseball player •
Mark Nenow, American long-distance runner •
Mark Noble, English footballer •
Mark Nulty (born 1967), Irish cricketer •
Mark O'Mahony (born 2005), Irish footballer •
Mark O'Meara (born 1957), American professional golfer •
Mark Otten (born 1985), Dutch footballer •
Mark Paré, Canadian NHL official •
Mark Payton (born 1991), American professional baseball player •
Mark Phillips, British Olympic gold-medal horseman •
Mark Pinger, German swimmer •
Mark Price, American basketball player •
Mark Rakita (born 1938), Soviet two-time Olympic champion saber fencer •
Mark Recchi, Canadian hockey player •
Mark Redman (born 1974), American baseball player •
Mark Redman (American football) (born 2002), American football player •
Mark Reid (born 1961), Scottish footballer •
Mark Richt (born 1960), American football coach •
Mark Ricks (gridiron football), American football player •
Mark Roth (1951–2021), American pro bowler •
Mark Robins, English football manager and former player •
Mark Roopenian, American football player •
Mark Rypien, American football player •
Mark Sanchez American football player •
Mark Sanford (basketball) American basketball player •
Mark Scheifele, Canadian ice hockey player •
Mark Sears (born 2002), American basketball player •
Mark Selby, English professional snooker and pool player •
Mark Shapiro (sports executive), American baseball executive •
Mark Siebeck, German volleyball player •
Mark Simoneau, American football player •
Mark Sloan (wrestler), British wrestler •
Mark Spitz (born 1950), American nine-time Olympic champion swimmer •
Mark Stanforth, American marathon runner and coach •
Mark Stephney, Montserratian cricketer •
Mark Stone, Canadian ice hockey player •
Mark Streit, Swiss professional ice hockey defenceman •
Mark Švets, Estonian footballer •
Mark Taimanov, Soviet Russian chess player •
Mark Teixeira, professional baseball player (MLB) •
Mark Thorson, American football player •
Mark Todd (equestrian), New Zealand equestrian •
Mark Tollefsen (born 1992), American basketball player in Israeli Basketball Premier League •
Mark Travers (born 1999), Irish footballer •
Mark Traynowicz, American football player •
Mark Trueman (born 1988), English football manager and former player •
Mark Tuitert (born 1980), Dutch speed skater •
Mark Turenshine (1944–2016), American-Israeli basketball player •
Mark van der Zijden (born 1973), Dutch swimmer •
Mark Veens (born 1978), Dutch swimmer •
Mark Veldmate, Dutch footballer •
Mark Viduka, Australian soccer player •
Mark Vientos (born 1999), American baseball player •
Mark Vital (born 1996), American basketball and football player •
Mark Walsh (darts player), professional darts player •
Mark Walton (American football) (born 1997), American football player •
Mark Ward (footballer born 1982), English footballer •
Mark Warnecke, German swimmer •
Mark Waugh (born 1965), Australian test cricketer (1991–2002) and twin brother of Steve Waugh •
Mark Webber (born 1976), Australian Formula 1 driver •
Mark Wiebe (born 1957), American professional golfer •
Mark Williams (snooker player), Welsh professional snooker player •
Mark Worthington, Australian basketball player •
Mark Wotte (born 1960), Dutch football manager and former player •
Mark Zahra (born 1982), Australian jockey ==Crime==