Arriagada is a Basque surname. Notable people include:
Carmen Arriagada (1807–1888), Chilean writer Cristián Arriagada (born 1981), Chilean actor Iván Arriagada (born 1963), Chilean businessman Jorge Arriagada (born 1943), Chilean film composer Marcelo Arriagada (born 1973), Chilean cyclist Marco Arriagada (born 1975), Chilean cyclist