Rub-a-dub-dub (disambiguation)

Rub-a-dub-dub is a nursery rhyme.

Rub-a-dub-dub may also refer to:
 * Rub-a-Dub-Dub (TV series), a 1984 animated series
 * Rub-A-Dub-Dub (novel), by Robert Wringham
 * "Rub-A-Dub-Dub" (Hank Thompson song)
 * "Rub a Dub Dub", a song by The Equals