Björn Rehnquist (born January 5, 1978, in Borås, Sweden) is a professional Swedish tennis player.

[1] Rehnquist had an outstanding junior career, winning the Australian Open Boys' Singles in 1996 and reaching as high as No.

Australian Open: W (1996) French Open: F (1996) Wimbledon: 3R (1995) US Open: QF (1994) The Swede competed in the 2006 Australian Open, losing to 20th seed Radek Štěpánek 6–1, 6–2, 6–2, and at the 2009 Australian Open, but lost in the first round 6–0, 6–2, 6–2 to eventual semi-finalist Andy Roddick.

Rehnquist won 5 Challenger titles in his career.

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