Jan August Hiż (25 November 1743 – 22 December 1816) was a Polish military officer, major general of the Poland's Crown Army.

His grandfather Wilhelm, married to Franciszka de Loupi, was captain of the Crown Guard.

His father Jan Wilhelm, married to Katarzyna de Mathy, was a colonel of the Crown Guard.

Dear corpse of Jan August Hiż, major-general of the formerly Polish Kingdom, aged 73 days 26, on December 22, 1816.

The descendants of Jan August Hiż held high positions throughout 19th and 20th centuries.