Real Club Deportivo Mallorca, S.A.D. ([reˈal ˈkluβ ðepoɾˈtiβo maˈʎoɾka], Catalan: Reial Club Esportiu Mallorca [rəˈjal ˈklub dəpuɾˈtiw məˈʎɔɾkə], Royal Sporting Club Mallorca), commonly known as Real Mallorca or just Mallorca is a Spanish professional football club based in Palma on the island of Majorca in the Balearic Islands. Founded on 5 March 1916, they currently compete in La Liga, holding home games at the Visit Mallorca Stadium with a 23,142-seat capacity.

The club had its peak in the late 1990s and early 2000s, reaching a best-ever 3rd place in La Liga in 1999 and 2001 and winning the Copa del Rey in 2003 following final defeats in 1991 and 1998. Mallorca also won the 1998 Supercopa de España and reached the 1999 UEFA Cup Winners' Cup Final.

Mallorca traditionally play in red shirts with black shorts and socks.

Founded on 5 March 1916, what would later become RCD Mallorca was registered at the Spanish Football Federation under the name of Alfonso XIII Foot-Ball Club.

Weeks after its establishment, the club wasted little time forming the directors of Alfonso XIII FBC, headed by engineer Adolfo Vázquez Humasqué and eight other football fans. Their first stadium, the Buenos Aires field, was inaugurated with a competitive fixture against FC Barcelona just 20 days after registering further fast-tracked development. Despite the fixture ending in a disappointing 8–0 defeat, it was not long before King Alfonso XIII himself requested the royal adoption of ‘Real’ in the team's title, therefore becoming Real Sociedad Alfonso XIII Foot-Ball Club.