Wil was a municipality in the district of Laufenburg in the canton of Aargau in Switzerland. The municipality is located in the north-east of the Fricktal region, about 3 km from the border to Germany. On 1 January 2010 the municipalities of Hottwil, Etzgen, Mettau, Oberhofen and Wil merged into the municipality of Mettauertal.
Current population is 669 inhabitants.