Richard Noel Marx is an American adult contemporary and pop rock singer-songwriter. He has sold over 30 million albums worldwide.

Marx was born in Chicago, Illinois, the only child of Ruth (née Guildoo), a former singer, and Dick Marx, a jazz musician and founder of a jingle company in the early 1960s. His father was of German-Jewish descent. Marx attended North Shore Country Day School. He has three half-siblings from his father's previous marriage.