Jennifer Coolidge (born August 28, 1961) is an American actress. She gained recognition for her roles in the comedy film series American Pie (1999–2012) and Legally Blonde (2001–2003).

Coolidge's other film credits include Pootie Tang (2001), A Cinderella Story (2004), Click (2006), Date Movie (2006), Epic Movie (2007), Promising Young Woman (2020), Single All the Way (2021), Shotgun Wedding (2022), and A Minecraft Movie (2025). She collaborated with Christopher Guest on four of his mockumentary films: Best in Show (2000), A Mighty Wind (2003), For Your Consideration (2006), and Mascots (2016).

On television, Coolidge has appeared in the sitcoms Joey (2004–2006), The Secret Life of the American Teenager (2008–2012), 2 Broke Girls (2011–2017), and the drama series The Watcher (2022). She garnered critical acclaim for her role as Tanya McQuoid in the first two seasons of the HBO anthology series The White Lotus (2021–2022), winning two Primetime Emmy Awards and a Golden Globe. In 2023, she was included in the annual Time 100 list of the most influential people in the world.

Coolidge was born in Boston, on August 28, 1961, and raised in Norwell, Massachusetts. As a child, she played the clarinet and attended orchestra camp for three summers.

She attended Norwell High School in Norwell and Cambridge School of Weston in Weston, Massachusetts, and then Emerson College in Boston and the American Academy of Dramatic Arts in New York City. During college, Coolidge aspired to be a dramatic actress similar to Meryl Streep, but instead pursued comedic character acting. As a student at the American Academy of Dramatic Arts, Coolidge worked as a waitress in a restaurant alongside Sandra Bullock, who also aspired to be an actress.

Coolidge made her first television appearance in the November 1993 Seinfeld episode "The Masseuse". In 1994, she was a regular on She TV, a short-lived sketch comedy that also featured Nick Bakay, Elon Gold, Simbi Khali, and Linda Kash. She had small roles appearing in such films as Not of This Earth, A Bucket of Blood, Plump Fiction, and A Night at the Roxbury. She also voiced Luanne's beauty school teacher, Miss Kremzer, in a recurring role on King of the Hill. She worked with The Groundlings, an improv and sketch comedy troupe based in Los Angeles. In June 1995, Coolidge unsuccessfully auditioned for Saturday Night Live.

In 1999, Coolidge got her big break playing Jeanine Stifler, or "Stifler's mom" in American Pie. The film was a box-office hit and grossed $235 million worldwide. In 2001, she reprised her role in American Pie 2. Later in that same year, she had a supporting role in Legally Blonde as Paulette Bonafonté Parcelle the manicurist. Legally Blonde was a box-office hit, grossing US$96 million domestically. The film's box-office success led to her reprising the role in its 2003 sequel, Legally Blonde 2: Red, White & Blonde, but the movie was not as financially successful as the first and generated mostly negative reviews. In 2003, she again played Stifler's Mom in American Wedding.

In 2003, she played the protagonist's agent Luise in Testosterone filmed in Argentina starring David Sutcliffe as Dean Seagrave and Antonio Sabato, Jr., as Pablo. In 2004, she had a supporting role in the romantic comedy A Cinderella Story playing Hilary Duff's character's vain, self-absorbed stepmother. The film went on to become a moderate box office hit despite negative critical reviews.