Olgiate Olona is a town and comune located in the province of Varese, in the Lombardy region of northern Italy.
The town is bathed by the river Olona. The nearest city to Olgiate Olona is Busto Arsizio, about 3 kilometres (2 mi) away.
The town of Olgiate Olona is divided into three "districts": the Center, Gerbone and Buon Gesù.