Gustaf Wilhelm Finnberg (21 November 1784 – 28 June 1833) was a Finnish painter.

He spent the years 1806 he left to Stockholm to study at the Royal Swedish Academy of Arts.

[1] When his father died 2 October 1820 he returned to Finland and set up his own atelier in Turku.

The painter Robert Wilhelm Ekman and perhaps also Magnus von Wright studied under Finnberg in the 1820s.

Other than some works inspired by the fire, Finnberg struggled to make a living as an artist until his death on 28 June 1833.