Aranha () is a Portuguese surname, meaning spider. Notable people with the name include:
Surname
Graça Aranha (1868–1931), Brazilian writer Jermaine Aranha, Canadian drag queen José Aranha (born 1951), Brazilian freestyle swimmer Osvaldo Aranha (1894–1960), Brazilian politician, diplomat and statesman Ray Aranha (1939–2011), American actor, playwright, and stage director
Nickname
Mário Lúcio Costa Duarte, known as Aranha (born 1980), Brazilian footballer