Nancy Lenehan (born April 26, 1953) is an American actress who has appeared in film and television since the 1980s.

Lenehan was born in Long Island, New York. She co-starred on the short-lived sitcom Worst Week. She also co-starred as Sandy Kelly, the matriarch in the sitcom Married to the Kellys, and had a recurring role on My Name Is Earl as Earl and Randy's mother, Kay Hickey.

She has appeared in featured, recurring and guest roles in many television shows and television movies, and feature films, including Malcolm in the Middle, Everybody Loves Raymond, How I Met Your Mother, Judging Amy, Gilmore Girls, Caroline in the City, Dharma & Greg, Buffy The Vampire Slayer, 3rd Rock from the Sun, ER, Boy Meets World, The Nanny, Quantum Leap, Roseanne, Grace Under Fire, V, The Facts of Life, Hill Street Blues and Alice.