Mucky Pup are an American hardcore and crossover thrash band formed in 1986 in Bergenfield, New Jersey, by brothers Chris and John Milnes together with Scott Dottino and Dan Nastasi. The band found their greatest success in Europe, particularly with the album A Boy in a Man's World (1989).
Over the years the band has split up and reunited several times, with vocalist Chris Milnes as the only continuous member.