Matthäus Günther (also Mathäus Günther) (7 September 1705 – 30 September 1788) was an important German painter and artist of the Baroque and Rococo era.
Günther, who was born in Peissenberg (at that time: Tritschengreith), helped develop the rococo style of painting in Bavaria and Tyrol, working on over 40 churches. His known work includes about 70 frescoes and 25 panels. In particular, he was known for his lifelike imagery and lively coloring.
Günther studied in Munich from 1723 to 1728 with Cosmas Damian Asam, the older of the two Asam brothers, and perfected his fresco painting in Augsburg. He frequently worked with some of the greatest artists of his time, including the architect Johann Michael Fischer and the plasterer Johann Michael Feuchtmayer and his brother Franz Xaver. He died in Haid near Wessobrunn.