Parabiago (Milanese: Parabiagh; Latin: Parabiacum) is a town located in the north-western part of the Metropolitan City of Milan, Lombardy, northern Italy.

The town is crossed by the road to Sempione (S.S.33) and Milan  – Gallarate Railway; nearby flow the Olona river and the Canale Villoresi.

In the Early Middle Ages, Parabiago was the centre of a parish (pieve) and of an autonomous county, named Comitatus Parabiagi and sometimes Burgaria, governed by the Sanbonifacio family, of Frankish descent, coming from Verona; in the 7th century, it received by the Lombard queen Theodelinda the permission for a little artificial stream, named Riale or Röngia, which took water from the Olona river and travelled through the village: that stream lasted until the 1928, when it was definitively stilted up.

The Truce of Parabiago (28 – 29 August 1257) led to the Pace di Sant'Ambrogio (Saint Ambrose's Peace), so called because it was signed in the homonymous Basilica in Milan).

(Italian Republican Party), was forced to resign by the Tangentopoli scandal about the new urbanistic plan, and some important local politicians were arrested.