Mark Treffers

Mark Ferdinand Treffers (born 16 December 1953) is a former swimming representative from New Zealand who specialised in the freestyle.

At the 1974 British Commonwealth Games he won the gold medal in the men's 400m Individual Medley and the silver medal in the men's 1500 m freestyle. At the 1970 British Commonwealth Games he won the bronze medal in the 1500 m freestyle.

He competed at both the 1972 and 1976 Summer Olympics with his best result being 6th place in the 1500 m at the 1972 Munich Olympic Games.