fictional creatures created by William Burroughs in his 1959 book Naked Lunch.

Mugwump Four, a short story by Robert Silverberg first published in Galaxy in August 1959. It deals with a man who stumbles upon a conspiracy of time-travelers via the titular telephone exchange. (It has been published in French under the title Le coup du téléphone.)

In British politics, a group of pacifists, lead by Geoffrey Theodore Garratt, who joined the British Labour Party after the First World War.

a fictional rank/title in the Harry Potter books, where Albus Dumbledore is described as 'Supreme Mugwump of the International Confederation of Wizards'.

Mugwump Specific , a patent medicine for venereal disease in the late 19th century.

In U.S. politics, a group of Republican activists concerned in the United States presidential election, 1884.

The Mugwumps , a 1960s rock band. Although they never achieved fame, members of the band went on to play in the Mamas and the Papas and Lovin Spoonful.

the last song on Terrorvision's 1996 album Regular Urban Survivors.

an early computer game written in BASIC and presented in a book by David H. Ahl, the editor of Creative Computing magazine in the 1980s.

one of the many character races available in the Lusternia MUD created by Iron Realms Entertainment.