Mark Ferdinand Treffers (born 16 December 1953) is a former swimming representative from New Zealand

New Zealand

New Zealand is an island country in the south-western Pacific Ocean comprising two main landmasses and numerous smaller islands. The country is situated some east of Australia across the Tasman Sea, and roughly south of the Pacific island nations of New Caledonia, Fiji, and Tonga...

 who specialised in the freestyle

Freestyle swimming

Freestyle is an unregulated swimming style used in swimming competitions according to the rules of FINA. The front crawl stroke is almost universally used during a freestyle race, as this style is generally the fastest...

.

At the 1974 British Commonwealth Games

1974 British Commonwealth Games

The 1974 British Commonwealth Games were held in Christchurch, New Zealand from 24 January to 2 February 1974. The bid vote was held in Edinburgh at the 1970 British Commonwealth Games....

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

1970 British Commonwealth Games

The 1970 British Commonwealth Games were held in Edinburgh, Scotland from 16 July to 25 July 1970.This was the first time the name British Commonwealth Games was adopted, the first time metric units rather than imperial units were used in events, and also the first time the games were held in...

 he won the bronze medal in the 1500 m freestyle.

He competed at both the 1972

1972 Summer Olympics

The 1972 Summer Olympics, officially known as the Games of the XX Olympiad, were an international multi-sport event held in Munich, West Germany, from August 26 to September 11, 1972....

 and 1976 Summer Olympics

1976 Summer Olympics

The 1976 Summer Olympics, officially known as the Games of the XXI Olympiad, was an international multi-sport event celebrated in Montreal, Quebec, Canada, in 1976. Montreal was awarded the rights to the 1976 Games on May 12, 1970, at the 69th IOC Session in Amsterdam, over the bids of Moscow and...

with his best result being 6th place in the 1500 m at the 1972 Munich Olympic Games.