Hepatocystis taiwanensis is a species of parasitic protozoa. They are transmitted by flies of the genus Culicoides and infect monkeys.
This species was described in 1941 by Yokogawa in Formosan rock macaque (Macaca cyclopis). It was reclassified as a species of Hepatocystis by Garnham in 1951.
This species is found in Taiwan.
This species infects Formosan rock macacque (Macaca cyclopis).