Paceco (Sicilian: Pacecu) is a town and comune in Western Sicily, Italy, administratively part of the province of Trapani, located nearby the Trapani city area (a distance of 5 km). It has 11,110 inhabitants as of 2004.

Paceco is a small rural centre: among its agricultural products there are melons, cereals, olives, grapes, and cheese dairy products. In Paceco are also present some sheep-breedings.

The centre was founded in 1607 by the marquis Placido Fardella. The town is however named after his wife, Teresa Paceco of Vigliena. Conceived in conformity with a meditated urban scheme, Paceco's installation is a mesh perfectly orthogonal with some rectangular isolated (ippodomea plan), very recurrent in the inhabited places of the 17th century.

Local monuments include the Cathedral Church, consecrated to the SS. Crucifix, built in 1623 and placed in the main piazza of the centre. Recently the Church has been entirely restored in order to make it regain the original beauty. In addition, there are the churches of Porto Salvo, Santo Padre, and Santa Lucia.