Gunnar Ericsson (29 June 1919 – 24 December 2013) was a Swedish businessman, sports official, Liberal Party politician - and a key player in establishing Triathlon as a fixture on the Olympic programme.

Ericsson graduated from the Stockholm School of Economics in 1946, and joined AB Åtvidabergs Industrier, which he then became CEO of from 1957 to 1970, and chairman of the board from 1970 to 1982. Ericsson was also a member of the Parliament of Sweden from 1969 to 1972- and chairman of the Swedish Football Association from 1970-1975. Crucially for ITU and Triathlon, Gunnar Ericsson was a member of the International Olympic Committee (IOC) 1965-1996, and an honorary IOC member from 1996 to 2013. Together with Les McDonald, he lobbied for Triathlon at every avail moment during IOC gatherings, and helped persuade Juan Antonio Samaranch of the merits of the sport.

He died on 24 December 2013, aged 94.