Courtney Ruth Miller (born June 19, 1995) is an American YouTuber, actor, writer, and director. She first appeared in The Mother's Day Rule video as lan's sister and was first introduced to the Smosh Family in the video Hand Bomb, along with Shayne Topp.

She was inducted into the Smosh recurring cast in mid-2015. Courtney got her start in the public eye when she began posting on Vine. Through the platform, she met Olivia Sui, who convinced her to audition for Smosh.