Ambrosius Volmar Keller is a 1538 portrait painting by the German Renaissance artist Hans Baldung.

The painting was offered to the city of Strasbourg by German Emperor Wilhelm II, from his private collection, in 1890.

The solemn portrait celebrates the young Keller's gravitas and new social status.

[1][2] Ambrosius Volmar Keller is Baldung's largest and last portrait painting, and the only one in which he used a landscape as a background.

The symbolism of the conspicuous grapevine growing behind Keller's back has not been entirely explained, it could be related to Christianity or to Northern European Renaissance humanism.