The Västerås Open was a golf tournament on the Swedish Golf Tour that featured on the Challenge Tour 1990–1994.

The Kentab Open was first played as an amateur tournament at Västerås GC in 1978, and it was added to the Swedish Golf Tour in 1986.

In 2007 Västerås Municipality became the main sponsor and it was rebranded the Västerås Mälarstaden Open.

[1] A similarly named event, the Kentab/RBG Open, sponsored name of the 1996 Swedish PGA Championship, was played at Frösåker G&CC and featured on the 1996 Challenge Tour.

Vilhelm Forsbrand, Joakim Rask and Peter Hanson have all won the tournament twice, Hanson while still an amateur.