Alexander Waske (born 31 March 1975) is a retired tennis player from Germany.

Waske twice beat players in the final qualifying rounds of tournaments who later got into the main draw as lucky losers and caused big historical upsets.

In the 2002 Wimbledon final qualifying round at Roehampton, Waske beat George Bastl, before lucky loser Bastl later beat Pete Sampras in the second round of the 2002 Wimbledon tournament, in one of the greatest upsets in tennis history.

In the final qualifying round for Indian Wells in 2007, Waske beat Guillermo Cañas, before lucky loser Cañas later beat Roger Federer in the second round of the 2007 Indian Wells tournament, ending Federer's 41–match unbeaten run.

This biographical article relating to German tennis is a stub.