Martin de Knijff (born 2 October 1972) is a professional sports bettor and live tournament high-stakes poker player from Gothenburg, Sweden.

Martin started playing poker aged 15 (mostly 5-card draw) but became fond of Omaha and Hold-Em when introduced to them.

[3] Less than a month later his success continued with a 2nd-place finish in the $5,000 No Limit Hold-Em event at the 2004 World Series of Poker.

[4] Martin wrote an article for Card Player magazine in 2005 encouraging tournament backers to reveal themselves.

[5] In addition to poker, Martin is an avid bridge player.