Nancy Addison, born Nancy Addison Altman on March 21, 1946, in New York City, was an American actress best known for her roles in soap operas. She began her career in the theater, appearing in productions of "The Fantasticks," "The Threepenny Opera," and "The Boyfriend."

Her first soap opera role was Kit Vested on "Guiding Light," which she played from 1969 to 1974. In 1975, she debuted on "Ryan's Hope" in the role with which she is most identified, Jillian Coleridge.

She played the role for over twelve years until she decided to leave in late 1987, and made her final appearance in January 1988. She returned briefly a year later to reprise the role of Jill for the show's final episodes.

In 1989, she moved into the role of Marissa Rampal on "All My Children." Addison portrayed Deborah Brewster Alden from 1993 to 1995 on "Loving," and in 1995 played the same role on "The City."

She co-starred with James Coburn in the three-part television mini-series "The Dain Curse" (1978). She also appeared in "Somewhere, Tomorrow" (1983), "Baby Me" (1988), and the long-running television series "Law & Order" in different roles on various episodes.

Nancy Addison was twice married, first to Clinton Dunn and later to Daniel Goldfarb. She volunteered a great deal of her time working with children with HIV/AIDS. In 1999, she was diagnosed with cancer of her adrenal gland and bronchial tubes, which claimed her life in 2002 in New York City, aged 56.

She was survived by her second husband, Daniel Goldfarb.