Santa Ana is the 9th canton in the province of San José in Costa Rica. The canton covers an area of 61.42 km², and has a population of 48,879. The capital city of the canton is Santa Ana.
The triangular-shaped canton is delineated by the Río Virilla on the north and stretches south as it narrows to include a portion of the Cerros de Escazú.
The canton of Santa Ana is subdivided into six districts (distritos):
The canton was established by law on August 29, 1907.
Coordinates: 9°56′N 84°11′W / 9.933°N 84.183°W