Sundin is a Swedish surname. Notable people with the surname include:
Andreas Sundin, professional Swedish ice hockey player
Carl Sundin, Swedish sprint canoer
Erik Sundin, Swedish football player
Fredrik Sundin professional Swedish ice hockey player
Mats Sundin, Swedish professional ice hockey player
Michael Sundin (1961–1989), English television presenter, actor, dancer and trampolinist
Niklas Sundin, Swedish guitarist of Dark Tranquillity
Robin Sundin, Swedish Bandy player
Ronnie Sundin, retired Swedish professional ice hockey defenceman
