Abitibi-Ouest Regional County Municipality (French pronunciation: [abitibi wɛst], Abitibi West) is a regional county municipality located in the Abitibi-Témiscamingue region of Quebec.

Its seat is La Sarre.

[2] There are 23 subdivisions within the RCM:[2]

Highways and numbered routes that run through the municipality, including external routes that start or finish at the county border:

Aiguebelle National Park