Sarah Michelle Prinze (née Gellar GHEL-ər; born April 14, 1977) is an American actress. After being spotted by a talent agent as a young child, she made her film debut at age six in the television film An Invasion of Privacy (1983). A leading role in the short-lived teen drama series Swans Crossing (1992) was followed by her breakthrough as Kendall Hart on the ABC soap opera All My Children (1993–1995), for which she won a Daytime Emmy Award.

Gellar achieved international recognition for her portrayal of Buffy Summers on the WB/UPN series Buffy the Vampire Slayer (1997–2003), which earned her a Saturn Award, and nominations for a Golden Globe and a TCA Award. Her films have grossed in excess of US$570 million at the worldwide box office, with credits including I Know What You Did Last Summer (1997), Scream 2 (1997), Cruel Intentions (1999), Scooby-Doo (2002), Scooby-Doo 2: Monsters Unleashed (2004), The Grudge (2004), Southland Tales (2006), TMNT (2007), and Do Revenge (2022).

Outside film, Gellar headlined The CW's Ringer (2011–2012), CBS's The Crazy Ones (2013–2014), and Paramount+'s Wolf Pack (2023), as well as providing voice work for Robot Chicken (2005–2018), Star Wars Rebels (2015–2016), and Masters of the Universe: Revelation (2021). In 2015, she co-founded Foodstirs, an e-commerce baking company. She released her own cookbook, Stirring Up Fun with Food, in 2017.