Erich "Mancow" Muller (born June 21, 1966) is a United States radio and television personality. He is best known as the host of Mancow's Morning Madhouse, a Chicago-based radio show that has, in recent years, been syndicated across the U.S. Mancow attended Central Missouri State University and received a Theatre degree in 1990. His career in radio began on the morning show, Holy Moly & Maxx, for station KMOK in Kansas City.

In 1993, Mancow made national headlines while working for radio station KYLD-FM in California. At the time, former President Clinton had tied up traffic on an LAX runway for over an hour because of a haircut on Air Force One. Mancow staged a parody of this incident on the San Francisco-Oakland Bay Bridge during rush hour. He used vans to block the westbound lanes of the bridge while his sidekick, Jesus "Chuy" Gomez, got a haircut. As a result of this publicity stunt, Mancow was prosecuted and given three years probation, fined $500, and ordered by a San Francisco Municipal Court judge to perform 100 hours of community service. The radio station eventually paid $1.5 million to settle a lawsuit filed by a bridge commuter.

After leaving California, Muller came to Chicago, where he created his now-famous radio show in 1994. Originally, he broadcast from FM 103.5, which at the time was a heavy metal station. He later moved to FM 101.1, the city's foremost alternative rock station. Currently, he is heard from 5:30-10am (CST) in eight nationwide radio markets. The show is still broadcast from the Merchantdize Mart in downtown Chicago. Muller has also published his memoirs, titled "Dad, Dames, Demons, and a Dwarf" (Regan Books, 2003).