Aisha Nilaja Tyler (born September 18, 1970) is an American actress, comedian, director, and talk show host. She is known for playing Andrea Marino in the first season of Ghost Whisperer, Dr. Tara Lewis in Criminal Minds, Mother Nature in The Santa Clause films, and voicing Lana Kane in Archer, as well as recurring roles on CSI: Crime Scene Investigation, Talk Soup, and Friends.

She co-hosted seasons two through seven of CBS's The Talk, for which she won a Daytime Emmy Award for Outstanding Entertainment Talk Show Host, and currently hosts Whose Line Is It Anyway?. She also hosted Ubisoft's E3 press conferences and has lent her voice to the video games Halo: Reach, Gears of War 3, and Watch Dogs.