Mark Foster may refer to:
Mark Foster (musician) (born 1984), founding member of Foster the People,
Mark Foster (swimmer) (born 1970), British swimmer,
Mark Foster (rugby union) (born 1983), English rugby union player,
Mark Foster (golfer) (born 1975), English professional golfer,
MRK1 (Mark Foster), dubstep artist, formerly Mark One or Markone,
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