| Juan Castañón de Mena | |
| Office: | Minister of the Army of Spain |
| Primeminister: | Francisco Franco |
| Term Start: | 30 October 1969 |
| Term End: | 9 June 1973 |
| Predecessor: | Camilo Menéndez Tolosa |
| Successor: | Francisco Coloma Gallegos |
| Birth Name: | Juan Castañón de Mena |
| Birth Date: | 10 April 1903 |
| Birth Place: | Madrid, Kingdom of Spain |
| Death Place: | La Coruña, Spain |
| Branch: | Spanish Armed Forces |
| Serviceyears: | 1918–1982 |
Juan Castañón de Mena (10 April 1903 – 27 April 1982) was a Spanish general who served as Minister of the Army of Spain between 1969 and 1973, during the Francoist dictatorship.[1] [2]