Ana Gasteyer (born May 4, 1967 in Washington, DC) is a comedian who established herself as a cast member of Saturday Night Live (SNL) in 1996.

She graduated from Sidwell Friends School and Northwestern University. She got her role on SNL due to her experience with the famed Los Angeles improv-sketch comedy group called The Groundlings.

Gasteyer created several well-known SNL characters during her time there, including middle school music teacher Bobbie Moughan-Culp (opposite Will Ferrell), NPR radio host Margaret Jo McCullen (opposite Molly Shannon), one half of Gemini's Twin (together with Maya Rudolph), and Lilith Fair poetess Cinder Calhoun, as well as spot-on impressions of Martha Stewart, Céline Dion, Katherine Harris, Joy Behar, Kathy Griffin, Helen Thomas, and Hillary Rodham Clinton.

Ana left SNL in 2002, and since then has appeared in various television programs and films, including Mean Girls.

She and her husband, Charlie McKittrick, have a daughter, Frances (with whom she was famously pregnant during her last season on SNL).