Steven Craig Alker (born 28 July 1971) is a New Zealand professional golfer who plays on the PGA Tour Champions, where he has won eight times.

In 2016, Alker played in The Open Championship after tying for second place in the Final Qualifying event held at the Royal Cinque Ports Golf Club.

[2][3] In November 2021, Alker won the TimberTech Championship on the PGA Tour Champions in Boca Raton, Florida.

He also finished runner-up at the Mitsubishi Electric Championship at Hualalai and the ClubCorp Classic; losing in a playoff on both occasions.

In November 2023, Alker won the Charles Schwab Cup Championship at Phoenix Country Club, defeating Ernie Els and Stephen Ames by a single stroke.