Björn Thomas Robert Dahlgren[1] (born 1 December 1979 in Skellefteå) is a Swedish auto racing driver who currently competes for the Scandinavian Touring Car Championship.

He previously competed in Australia and New Zealand for a single season in the V8 Supercars Championship for Garry Rogers Motorsport, as well as in the World and for Polestar Racing,[2] making him the longest-serving factory-supported Volvo driver.

In 2016, Dahlgren joined Polestar Cyan Racing to compete at the 2016 Scandinavian Touring Car Championship with a Volvo S60, ranking second in points.

He also entered three rounds of the 2016 World Touring Car Championship with the team, finishing seventh at Qatar race 1.

For the 2017 TCR Scandinavia Touring Car Championship, the driver moved to PWR Racing to drive a factory-supported SEAT León, winning the title.