Paul Andrew "Andy" Richter (born October 28, 1966) is an American comedian, actor, and announcer. He is best known for his sidekick role on Late Night with Conan O'Brien between 1993 and 2000. He is also known for his work with the Madagascar films, and for the sitcoms Quintuplets, Andy Richter Controls the Universe and Andy Barker P.I. Richter has returned to O'Brien's side as the announcer on The Tonight Show with Conan O'Brien, which began airing on June 1, 2009.

Richter, the second of four children, was born in Grand Rapids, Michigan. His mother, Glenda Swanson, was a kitchen cabinet designer, and his father, Laurence R. Richter, taught Russian at Indiana University, for more than 32 years. Richter was raised in Yorkville, Illinois. In high school, Andy Richter was elected Prom King and voted "Best Sense of Humor".(MI-Y-HI 1984, Yorkville High School Vol. XLVI)

In the late 1980s Richter attended Columbia College Chicago, as a film major. While at Columbia, he learned the basics of comedic acting and writing by starring in numerous student films and videos. After leaving Columbia in 1988, Richter worked as a production assistant on commercial shoots, in Chicago. In 1989, he began taking classes at Chicago's Improv Olympic. His quick wit and acting skills catapulted him from student to "House Performer" within a year. Richter branched out working with "The Comedy Underground" and the Annoyance Theater.