The Count of Sandomil | |
|---|---|
 Portrait by unknown author, 18th century (Archaeological Museum) | |
| Viceroy of India | |
| In office 7 November 1732 – 18 May 1741 | |
| Monarch | John V |
| Preceded by | 13th Interim Governing Council |
| Succeeded by | Marquis of Louriçal |
| Personal details | |
| Born | 9 November 1670 |
| Died | 3 August 1745 (aged 74) Lisbon, Portugal |
| Spouse | D. Margarida Juliana de Távora |
| Military service | |
| Allegiance |   Portugal |
| Branch/service | Portuguese Army |
| Rank | Mestre de campo general |
| Battles/wars | War of the Spanish Succession |
D. Pedro Mascarenhas, 1st Count of Sandomil (9 November 1670 – 3 August 1745), was a Portuguese nobleman and colonial administrator, Viceroy of India from 1732 to 1741.