Richard Francis Agnew Jr. (born December 9, 1958), better known as Rikk Agnew, is an American songwriter and multi-instrumentalist. He was the guitarist of the influential deathrock band Christian Death, as well as the hardcore punk and punk rock bands the Adolescents, Social Distortion and D.I. In 2004 and 2005, Agnew toured with deathrock band 45 Grave in the place of their previous guitarist.

He also pursued a solo career in music releasing his debut studio album, All by Myself, in 1982. Since then, he has released two more albums, Emotional Vomit and Turtle.