Duchess of Wellington is the title given to the wife of the Duke of Wellington. Women who have held the title include:
- Catherine Wellesley, Duchess of Wellington (1773-1831)
- Elizabeth Wellesley, Duchess of Wellington (1820-1904)
- Dorothy Wellesley, Duchess of Wellington (1889-1956)
- Diana Wellesley, Duchess of Wellington (1922-2010)
- Princess Antonia, Duchess of Wellington (born 1955), current holder of the title
In popular culture:
- The 2009 Filipino comedy film Yaya and Angelina: The Spoiled Brat Movie featured a fictionalized (and unnamed) Duchess of Wellington, who was the subject of a terrorist plot in the movie. The duchess was portrayed by Michael V., who also portrayed one of the titular characters, Rosalinda "Yaya" Lucero.