An heir apparent is someone likely to inherit a throne or title.
Heir Apparent may also refer to
Heir Apparent (novel) Heir Apparent (band) "Heir Apparent", a song by Opeth from the album Watershed "Heir Apparent", a song by Morrissey from the "Alma Matters" single For Heir to the Throne, the videogame expansion pack for Europa Universalis III Heir to the Throne, one Campaign from The Battle for Wesnoth