| José Joaquín Puig de la Bellacasa | |
| Office: | Secretary General of the Spanish Royal Household |
| Term Start: | 19 January 1990 |
| Term End: | 27 February 1991 |
| Predecessor: | Sabino Fernández Campo |
| Successor: | Joel Casino Gimeno |
| Office2: | Member of the Spanish Council of State |
| Term Start2: | 1997 |
| Term End2: | 2005 |
| Birth Name: | Ricardo Díez-Hochleitner Rodríguez |
| Birth Date: | 5 June 1931 |
| Birth Place: | Bilbao, Spain |
| Death Place: | Madrid, Spain |
| Alma Mater: | Complutense University of Madrid |
José Joaquín Puig de la Bellacasa y Urdampilleta (5 June 1931 – 20 April 2021[1]) was a Spanish diplomat and civil servant.
Bellacasa attended the Complutense University of Madrid.
He served as the Undersecretary of Foreign Affairs from 1978 to 1980. Between 1980 and 1983, he was the Spanish Ambassador to the Holy See and the Sovereign Military Order of Malta, from 1983 and 1990 to the United Kingdom and from 1991 to 1995 to Portugal.
He was named Secretary-General of the Spanish Royal Household, office he held until 1991.
He died from COVID-19 on 20 April 2021, at the age of 89.[2]