From an Irish surname which was derived from Ó Riain meaning "descendant of Rían". The given name Rían probably means "little king" (from Irish rí "king" combined with a diminutive suffix).

actors, actresses, athletes, Barbie characters, cities, film titles, footballers, ice hockey, Its Always Sunny in Philadelphia characters, kings, littleness, musicians, pop music, pop singers, Quantico characters, royalty, singers, storms, surnames, television, The Office US characters, Thomas and Friends characters, Tiger and Bunny characters, top 10 in Australia, top 10 in the UK, towns, trendy, True Detective characters, TV show titles, uncertain etymology, VR Troopers characters