Catherine O'Hara is a celebrated Canadian-American actress, comedian, and screenwriter known for her versatile performances across film and television. She gained prominence in the entertainment industry through her work in sketch comedy and improvisational theater, eventually transitioning into dramatic roles that showcased her range and talent. With a career spanning several decades, O'Hara has received numerous accolades, including two Primetime Emmy Awards, a Golden Globe Award, and two Screen Actors Guild Awards, solidifying her status as a prominent figure in the entertainment world.

Born Catherine Anne O'Hara on March 4, 1954, in Toronto, Ontario, Canada, she grew up in a creative environment that nurtured her artistic inclinations. She began her career in the late 1970s with the sketch comedy series Second City Television, which aired from 1976 to 1984. Her work on the show earned her a Primetime Emmy Award and introduced her to a wider audience. O'Hara's unique ability to blend humor with poignant character portrayals quickly made her a standout talent.

Throughout the 1980s and 1990s, O'Hara appeared in several notable films that defined her career. She showcased her comedic prowess in movies such as After Hours (1985) and Heartburn (1986), but it was her role in Beetlejuice (1988) that solidified her place in pop culture. O'Hara further endeared herself to audiences with her performances in the beloved holiday classic Home Alone (1990) and its sequel, Home Alone 2: Lost in New York (1992). Her ability to tackle diverse roles allowed her to collaborate with acclaimed director Tim Burton and work alongside other notable actors.

In the late 1990s and early 2000s, O'Hara formed a fruitful partnership with filmmaker Christopher Guest, starring in his series of mockumentary films, including Waiting for Guffman (1996), Best in Show (2000), A Mighty Wind (2003), and For Your Consideration (2006). These films showcased her improvisational skills and ability to bring quirky characters to life.

O'Hara's voice acting talents also flourished, as she lent her voice to several animated films, including The Nightmare Before Christmas (1993), Chicken Little (2005), Over the Hedge (2006), Monster House (2006), Where the Wild Things Are (2009), Frankenweenie (2012), and most recently, Elemental (2023).

Her career experienced a remarkable resurgence with the hit CBC sitcom Schitt's Creek, which aired from 2015 to 2020. O'Hara's portrayal of Moira Rose earned her critical acclaim, culminating in a Primetime Emmy Award for Outstanding Lead Actress in a Comedy Series and a Golden Globe Award for Best Actress in a Television Series Musical or Comedy. Prior to this, she garnered an Emmy nomination for her role as Temple Grandin's aunt in the HBO film Temple Grandin (2010) and had notable appearances in the HBO drama series Six Feet Under (2003–2005).

In recent years, O'Hara has continued to showcase her talents in various projects, including her role in the Netflix series A Series of Unfortunate Events (2017–2018) and upcoming appearances in the Apple TV+ comedy series The Studio (2025) and the HBO post-apocalyptic drama series The Last of Us (2025). Married to director Bo Welch since April 25, 1992, O'Hara remains a beloved figure in the industry, celebrated for her contributions to both comedy and drama.