Princess Alicia of Bourbon-Parma was a Spanish infanta. A member of the House of Bourbon-Parma, she became Duchess of Calabria through her marriage to Infante Alfonso, Duke of Calabria. She occasionally undertook official duties on behalf of the Spanish monarchy. Through marriage, she was the maternal half-aunt of King Juan Carlos I of Spain. She was the longest-lived Infanta of Spain.

Infante Alfonso of Spain, Prince of the Two Sicilies, Duke of Calabria was one of two claimants to the title of the head of the House of Bourbon-Two Sicilies from 1960 until his death in 1964. Alfonso was the son of Prince Carlos of Bourbon-Two Sicilies (1870–1949) and his wife, María de las Mercedes, Princess of Asturias (1880–1904). He was born and died in Madrid, Spain.