Miguel Grau
| Miguel Grau Seminario | |
|---|---|
| Seminario photographed by Eugenio Courret at the time of the War of the Pacific, c. 1879 | |
| Birth name | Miguel María Grau Seminario | 
| Nickname(s) | El Caballero de los Mares (The Gentleman of the Seas) | 
| Born | 27 July 1834 Paita, Department of Piura, Peru | 
| Died | 8 October 1879 (aged 45) Mejillones, Litoral Department, Bolivia (modern-day Antofagasta Province, Chile) | 
| Buried | |
| Allegiance | Peru | 
| Branch | Peruvian Navy | 
| Years of service | 1853-1862 1864-1879 | 
| Rank | Rear admiral Grand admiral (posthumously) | 
| Commands | Huáscar | 
| Battles / wars | |
| Signature | |
Miguel María Grau Seminario (27 July 1834 – 8 October 1879) was a Peruvian Navy officer and politician best known for his actions during the War of the Pacific. He was nicknamed "Gentleman of the Seas" for his kind and chivalrous treatment of defeated enemies and is held in high esteem by both Peruvians and Chileans. Grau is an iconic figure for the Peruvian navy, and one of the most famous naval officers from the Americas.