| Infanta María Teresa | |
| Princess Ferdinand of Bavaria | |
| Full Name: | Spanish; Castilian: María Teresa Isabel Eugenia del Patrocinio Diega |
| Birth Date: | 12 November 1882 |
| Birth Place: | Madrid, Kingdom of Spain |
| Death Place: | Madrid, Kingdom of Spain |
| House: | Bourbon |
| Father: | Alfonso XII of Spain |
| Mother: | Maria Christina of Austria |
| Burial Place: | El Escorial |
Infanta María Teresa of Spain (Spanish; Castilian: María Teresa Isabel Eugenia del Patrocinio Diega de Borbón y Habsburgo, Infanta de España; 12 November 1882 in Madrid, Kingdom of Spain – 23 September 1912 in Madrid, Kingdom of Spain) was the second eldest child and daughter of Alfonso XII of Spain and his second wife Maria Christina of Austria. Maria Teresa was an Infanta of Spain and a member of the House of Bourbon by birth.
Maria Teresa married her first cousin, Prince Ferdinand of Bavaria, Infante of Spain, eldest son and child of Prince Ludwig Ferdinand of Bavaria and his wife Infanta María de la Paz of Spain, on 12 January 1906 in Madrid. Maria Teresa and Ferdinand had four children: