Jenny Mollen (born May 30, 1979) is an American actress, writer, and producer known for her comedic roles in films and television alongside her work as a New York Times bestselling author of humorous essay collections.

Born in Phoenix, Arizona, to a family of doctors, she began her career in local theater, performing at venues like The Old Globe in San Diego, Idyllwild Arts, and the Oregon Shakespeare Festival, before attending UCLA's School of Theater, Film, and Television, where she graduated in three years after creating and starring in her one-woman show Not a Pretty Girl.

Fluent in French and German from studies in Paris and Heidelberg, Jenny Mollen transitioned to screen acting with early television appearances in series such as 18 Wheels of Justice and the horror film Return of the Living Dead: Rave to the Grave.​

Jenny Mollen gained wider recognition with supporting roles in comedies including My Best Friend's Girl opposite her future husband Jason Biggs in 2008, Crazy, Stupid, Love. in 2011, and guest spots on shows like Angel as Nina Ash, CSI: NY, Law & Order: LA, Suits, Wilfred, and Girls.

She met Biggs on the set of My Best Friend's Girl, marrying him in 2008 after a brief engagement, and the couple has two sons, Sid and Lazlo, with Jenny Mollen later diagnosed with Graves' disease following her second pregnancy.

Her writing career took off with the 2014 memoir I Like You Just the Way I Am, a collection of personal essays that became a bestseller and inspired an ABC Digital series she wrote, executive produced, and starred in, followed by Live Fast Die Hot in 2016.​

As a multifaceted entertainer, Jenny Mollen has contributed columns to Playboy's The Smoking Jacket, Cosmopolitan, Glamour, and Grub Street, earning praise from The Huffington Post and The New York Times for her sharp social media humor on Twitter and Instagram.

She executive produced the series City of Likes in 2023 based on her work and continues acting in projects like the upcoming Miracle on 74th Street while maintaining an active online presence as a relatable voice on motherhood, relationships, and celebrity life.