The AgustaWestland AW109 is a lightweight, twin-engine, eight-seat multi-purpose helicopter built by the Italian manufacturer Leonardo Finmeccanica (formerly Agusta Westland, merged into the new Finmeccanica since 2016). The rotorcraft had the distinction of being the first all-Italian helicopter to be mass-produced.

Developed as the A109 by Agusta, it originally entered service in 1976 and has since been used in various roles, including light transport, search-and-rescue, and military roles. The AW109 has been in continuous production for 40 years. The AgustaWestland AW119 is a derivative of the AW109, the main difference being that it is powered only by a single engine instead.