| Addie Horton | |
| Series: | Days of our Lives |
| Portrayer: | Patricia Huston (1965–66) Patricia Barry (1971–74) |
| First: | November 10, 1965 |
| Last: | December 18, 1974 |
| Creator: | Peggy Phillips and Kenneth Rosen |
| Classification: | Former; regular |
| Image1: | Addiehorton.jpg |
| Caption1: | Patricia Barry as Addie Williams |
| Occupation: | Housewife |
| Family: | Horton |
| Husband: | Ben Olson (1948–71) Doug Williams (1972–74) |
| Children: | Julie Olson Steve Olson Hope Williams |
| Grandchildren: | David Banning Spencer Olson Shawn-Douglas Brady Zack Brady Ciara Brady |
| Grandparents: | William Horton Adelaide Horton Sid Grayson Abigail Grayson |
| Nieces/Nephews: | Sandy Horton Mike Horton Jessica Blake Fallon Melissa Horton (adoptive) Jennifer Horton Lucas Horton Sarah Horton (legal) |
| Relatives: | Eli Grant Claire Brady Bo Weston |
Addie Horton is a fictional character on the television soap opera Days of Our Lives, portrayed by Patricia Huston from November 10, 1965, to March 9, 1966, and Patricia Barry from April 19, 1971, to June 28, 1974. Barry reprised her role as Addie for one episode on December 18, 1974.
Addie Williams is the daughter of Tom and Alice Horton. She has four other siblings; her twin brother, Tommy; and Mickey, Bill and Marie Horton. She was first married to wealthy banker Ben Olson and had two children with him, Steve and Julie Williams. Ben and Addie left Salem in 1966, but Addie returned to Salem in 1971 after Ben's death. Addie disapproved of Julie's fiancé, Doug Williams, but ended up marrying him on the night that he was meant to marry Julie, leaving Julie crushed.
Addie soon discovered that she was ill with Leukumia and that she was pregnant. Despite her doctor's warnings, she decided to keep her baby and let the cancer take its course instead of fighting it and harming the baby. Addie soon gave birth to her and Doug's first and only child together, a baby girl named Hope. Soon afterwards though Addie was deathly ill and soon realized that she wouldn't live long. So as she was taking a walk one day with her daughter, a car spun out towards them. Addie pushed her daughter's stroller to safety and let the car hit her so her daughter would survive, while Addie was instantly killed.