| Margaret Theresa of Spain | |
|---|---|
 Portrait from unknown artist, c. 1662–1664, currently displayed in the Kunsthistorisches Museum, Vienna | |
| Holy Roman Empress | |
| Tenure | 25 April 1666 – 12 March 1673 |
| Born | 12 July 1651 Royal Alcazar, Madrid, Crown of Castile |
| Died | 12 March 1673 (aged 21) Hofburg Palace, Vienna, Archduchy of Austria, Holy Roman Empire |
| Burial | |
| Spouse | |
| Issue Detail | Maria Antonia, Electress of Bavaria |
| House | Habsburg |
| Father | Philip IV of Spain |
| Mother | Mariana of Austria |
Margaret Theresa of Spain (Spanish: Margarita Teresa, German: Margarete Theresia; 12 July 1651 – 12 March 1673) was, by marriage to Leopold I, Holy Roman Empress, German Queen, Archduchess of Austria and Queen of Hungary and Bohemia. She was the daughter of King Philip IV of Spain and the elder full-sister of Charles II, the last of the Spanish Habsburgs. She is the central figure in the famous Las Meninas by Diego Velázquez, and the subject of many of his later paintings.