David Fatum (born August 4, 1968) is a Canadian-American darts player. His nickname is "The Scorpion". He was a semi-finalist at the 2008 US Open and runner-up at the 2025 Dutch Open.

Fatum's first major exposure came in the 2008 US Open where he reached the semi-finals losing to Colin Lloyd. In his third-round game, he defeated Davis Snider who had earlier beaten North American Darts champion Darin Young and former BDO world champion Steve Beaton. He then beat Stephen Panuncialman who beat Paul Lim in the third round. He then secured wins over Bill Davis and Chris Mason before eventually bowing out to Lloyd.

His performance contributed to him finishing 3rd in the American order of merit, earning him a place in the 2009 PDC World Darts Championship. He defeated Shane O'Connor in the preliminary round, but was beaten by Wayne Mardle in the first round.

• 2009: First round (lost to Wayne Mardle 0–3) (sets)

• Profile and stats on Darts Database