| The Duke of Berwick | |
| Honorific-Suffix: | GE |
| Birth Date: | 28 December 1718 |
| Birth Place: | Madrid, Spain |
| Death Date: | 30 September 1785 (aged 66) |
| Death Place: | Valencia, Spain |
| Birthname: | Jacobo Francisco Eduardo Fitz-James Stuart y Colón de Portugal |
| Nationality: | Spanish |
| Spouse: | María Teresa de Silva y Álvarez de Toledo |
| Children: | Carlos Fitz-James Stuart, 4th Duke of Liria and Jérica |
| Father: | James Fitz-James Stuart, 2nd Duke of Berwick |
| Mother: | Catalina Ventura de Colón de Portugal, 9th Duchess of Veragua and La Vega |
| Honorific Prefix: | Admiral of the Ocean Sea The Most Excellent |
Jacobo Francisco Eduardo Fitz-James Stuart y Colón de Portugal, 3rd Duke of Berwick (28 December 1718 – 30 September 1785) was a Spanish nobleman. On the death of his father, James Fitz-James Stuart, in 1738, he inherited his titles of Duke of Berwick and Duke of Liria and Xerica. (He also possessed many other titles in both Spain and England.) His mother was Spanish, and on her side he was a direct descendant of explorer Christopher Columbus.
On 26 July 1738, in Alba de Tormes, he married Maria Teresa de Silva y Alvarez de Toledo (6 May 1716 – 5 May 1790), daughter of Manuel Maria de Silva y Mendoza, (born 18 October 1677), 9th Conde de Galve, 7th son of the 5th Duke of Pastrana and Estremera and of the outstandingly wealthy Maria Teresa Alvarez de Toledo, (18 September 1691 – 1755), 11th Duquesa de Alba de Tormes, 8th duquesa de Huéscar, 4th Duquesa de Montoro, 6th Duquesa de Olivares, 7th Duquesa de Galisteo, Grandee of Spain, and a number of lesser Spanish noble titles (such as Marquessats, Earldoms, Baronetages, Viscountships and Lordships).
Their only son to survive to adulthood was Carlos Bernardo Fitz-James Stuart y de Silva, (Liria, Valencia, 25 March 1752 – Madrid, 7 September 1787).