Supernumerary means "exceeding the usual number".
Supernumerary may also refer to:
Supernumerary actor, a performer in a film, television show, or stage production who has no role or purpose other than to appear in the background, more commonly referred to as an "extra"
Supernumerary body part, most commonly a congenital disorder involving the growth of an additional part of the body and a deviation from the body plan
Supernumerary judge, a semi-retired judge appointed to hear cases on a part-time basis
Supernumerary rainbow, extra colored bands sometimes seen inside the arc of a rainbow
Jewish Supernumerary Police, a Jewish militia active in the British Mandate of Palestine
Small supernumerary marker chromosome (sSMC), an extra, 47th autosomal chromosome
Supernumerary sexes (or supernumerary genders), gender categories beyond male and female
