San José de Jáchal (Spanish pronunciation: [saŋ xoˈse ðe ˈxatʃal], often shortened to Jáchal) is a city in the northeast of the province of San Juan, Argentina, located on National Route 40, south of the Jáchal River.

It has 21,018 inhabitants per the 2001 census [INDEC], and is the head town of the Jáchal Department.

San José de Jáchal was founded on 25 June 1751 by the field master Juan de Echegaray, by the order of the Board of Populations of the Kingdom of Chile.

That same month, through an interesting ceremony, the Villa de San José de Jáchal, forty leagues north of San Juan de la Frontera, was born to civilian and political life.

This article about a place in San Juan Province, Argentina is a stub.