Subramanian Raja Krishnamoorthi (born July 19, 1973) is an American attorney and politician serving as the U.S. representative for Illinois's 8th congressional district since 2017. The district includes many of Chicago's western and northwestern suburbs, such as Hoffman Estates, Elgin, Schaumburg, Wood Dale, and Elk Grove Village.

Born in New Delhi, India, and raised in Peoria, Illinois, Krishnamoorthi is the first Indian-American or person of South Asian descent to serve as a Ranking Member or Chair of any full committee in the U.S. Congress. He also serves as an assistant whip.