Dan Berglund (born 5 May 1963) is a Swedish musician who mainly plays the upright bass and is known within jazz and fusion.

As part of his musical training at the Birka Folkhögskola in Östersund he came to pick up the upright bass and played in the regional symphony orchestra, with whom he also had guest performances and first television appearances.

There he played in the group Jazz Furniture and in the quintet of Lina Nyberg, where he met Esbjörn Svensson.

From 1993 he was a member of the highly successful Esbjörn Svensson Trio, with whom he recorded numerous albums and toured worldwide.

In 2009 he founded his own crossover band Tonbruket, which includes Johan Lindström (guitar, keyboards), Martin Hederos (piano, accordion, violin, keyboards) and Andreas Werliin (drums, percussion), who do not come from the jazz scene.