Pigeonhole or pigeon hole may refer to: Pigeonholes, nesting spaces in a dovecote Pigeonhole, one of the boxes in a pigeon coop Pigeonholing, classifying things into categories Pigeonhole principle, a mathematical principle Pigeonhole sort, a sorting algorithm Pigeon-hole messagebox, a communication method Pigeonhole (album), by the band New Fast Automatic Daffodils Pigeon Hole (band), a Canadian hip hop duo Pigeon Hole Station, once part of Victoria River Downs Station, Northern Territory, Australia