Gustave Adolph Sonnenberg (March 6, 1898 – September 9, 1944) was an American football player and professional wrestler of German descent and World Heavyweight Champion.

In 1923, at age 25, Sonnenberg turned professional, playing in the NFL for the Buffalo All Americans (one game) and the Columbus Tigers.

"[5] He became a main event wrestler for Boston-based promoter Paul Bowser and unsuccessfully challenged world heavyweight champion Ed "Strangler" Lewis on June 30, 1928, at Boston Arena.

[6] Sonnenberg held the title for nearly two years before losing it to Ed Don George on December 10, 1930, in Los Angeles.

[5] In October 1929, Sonnenberg was attacked on the streets of Los Angeles by part-time wrestler Pete Ladjimi in an attempt to expose the reigning world champion as weak.

He only held the title for 13 days before dropping it to Steve "Crusher" Casey in Boston on March 29, 1939.