Hipólito Yrigoyen Partido is a county (partido) in Buenos Aires Province, it is located near the centre of the province in central Argentina at coordinates .
The provincial subdivision has a population of 8,819 inhabitants in an area of , and its administrative centre is Henderson, which is located from Buenos Aires.
People from Hipólito Yrigoyen Partido are known as yrigoyense.
The name was chosen as a tribute to Hipólito Yrigoyen, who was President of Argentina from 1916 to 1922 and again from 1928 to 1930.