The cause of death of beloved actress and comedian Catherine O'Hara has been officially confirmed, bringing clarity as fans and colleagues continue to mourn one of comedy's most distinctive and cherished voices.
According to official records released this week, O'Hara died from a pulmonary embolism, a sudden blockage in the lungs caused by a blood clot. The report also noted that rectal cancer was an underlying condition contributing to her death. She passed away on January 30, 2026, at the age of 71, following a period of private medical treatment.
O'Hara had largely kept her illness out of the public eye, choosing instead to continue working selectively while prioritizing family and health. Medical sources confirmed she had been receiving cancer treatment for much of the past year.
A towering figure in film, television, and sketch comedy, O'Hara's career spanned more than five decades. She earned widespread acclaim for her Emmy-winning portrayal of Moira Rose on Schitt's Creek, while also becoming a generational favorite through iconic roles in Home Alone, Beetlejuice, Best in Show, and numerous other films and television projects. Her work with the legendary Canadian comedy troupe SCTV helped shape modern sketch comedy and influenced generations of performers.
Tributes have poured in from across the entertainment industry, with co-stars, directors, and fans remembering O'Hara not only for her razor-sharp wit and fearless performances, but also for her warmth, generosity, and deep professionalism behind the scenes.
O'Hara is survived by her husband, production designer Bo Welch, and their two sons. The family has requested privacy as they continue to grieve, expressing gratitude for the outpouring of love and remembrance from around the world.
As audiences revisit her unforgettable characters and performances, Catherine O'Hara's legacy endures - a rare artist whose brilliance brought laughter, heart, and humanity to every role she touched.
