Lucas Justra Bjerregaard (born 14 August 1991) is a Danish professional golfer who plays the European Tour.

He played in the Eisenhower Trophy for Denmark in 2008 and 2010; the 2010 team, with Joachim B. Hansen and Morten Ørum Madsen finished second to France by one stroke.

On 7 October 2018, Bjerregaard won the Alfred Dunhill Links Championship at the Old Course at St Andrews beating Tommy Fleetwood and Tyrrell Hatton by one stroke and winning €695,759 for his second European Tour victory.

[2] At the 2019 WGC-Dell Technologies Match Play, having defeated 2016 Open champion Henrik Stenson earlier in the day, Bjerregaard scored a massive upset victory over Tiger Woods 1 up.

The following day, losses to Matt Kuchar and Francesco Molinari placed Bjerregaard 4th, his best finish in a World Golf Championships event.