Carlos Fernández-James Stuart y Martínez de Irujo,[a] 19th Duke of Alba, GE (né Martínez de Irujo y Fitz-James Stuart;[1] born 2 October 1948), is a Spanish aristocrat.

He is the head of the House of Alba, one of the most prominent families of the Spanish nobility.

He obtained a degree in law at the Complutense University of Madrid and now works as an adviser for several cultural institutions, such as the Hispania Nostra Foundation, the Valencia de Don Juan Institute, and the Hispanic Society of America.

[4] The succession to most of the titles was officially confirmed in 2015 except for the Lordship (Señorío) of Moguer and the County of Modica that have been inherited traditionally.

The couple had two sons before their marriage was annulled in 2004:[7] Subsequently, between 2004 and 2006, he maintained a friendly relationship with Alicia Koplowitz, 7th Marchioness of Bellavista, a Spanish businesswoman who ranked as Spain's richest woman in the Forbes World's Richest People list.