Tobias Stimmer was a Swiss painter and illustrator. His most famous work is the paintings on the Strasbourg astronomical clock. He died in Strasbourg.

He was born in Schaffhausen, and was active in Schaffhausen, Strasbourg and Baden-Baden as a wall and portrait painter. He made a great number of drawings for woodcuts (Bible scenes, allegories, etc.) which were published by the printer Sigmund Feyerabend in Frankfurt am Main, and Bernhart Jobin in Strasbourg.

Stimmer followed Hans Holbein the Younger, but developed his own mannerism. Among his wall paintings remain the "House zum Ritter" in Schaffhausen, although this was actually much restored and changed.