| Tranquilino Luna | |
| Image Name: | Tranquilino Luna.jpg |
| Birth Date: | February 25, 1849 |
| State: | New Mexico Territory |
| Term Start: | March 4, 1881 |
| Term End: | March 5, 1884 (Delegate) |
| Preceded: | Mariano S. Otero |
| Succeeded: | Francisco A. Manzanares |
| Party: | Republican |
| Alma Mater: | University of Missouri |
Tranquilino Luna (February 25, 1849 - November 20, 1892) was a Delegate to the United States House of Representatives from the Territory of New Mexico. Born in Los Lunas, New Mexico, Luna attended the public schools and graduated from the University of Missouri in Columbia, Missouri. He engaged extensively in stock raising.
Luna served as delegate to the Republican National Conventions in 1880 and 1888. Luna was elected as a Republican to the Forty-seventh Congress (March 4, 1881 – March 3, 1883). He presented credentials as a Delegate-elect to the Forty-eighth Congress and served from March 4, 1883, until March 5, 1884, when he was succeeded by Francisco A. Manzanares, who contested his election. After leaving Congress, he was the Sheriff of Valencia County, New Mexico, from 1888-1892. He died in Peralta, New Mexico, on November 20, 1892, and was buried in Los Lunas Cemetery in Los Lunas, New Mexico.