James Power (1788 or 1789 – August 15, 1852) was an Irish-born Texan empresario, politician and signer of the Texas Declaration of Independence, known for the land grant he received with partner James Hewetson that included the coastal area between the mouths of the Guadalupe and Nueces Rivers, as well as his founding and service as the first mayor of the Aransas City settlement. He often represented Refugio County during statewide conventions. Was part of the Mexican national era