Wettswil am Albis is a municipality in the district of Affoltern in the canton of Zürich in Switzerland.

Of the rest of the land, 30.9% is settled (buildings or roads) and the remainder (3.2%) is non-productive (rivers, glaciers or mountains).

[3] The term am Albis in the name refers to the chain of hills in the area.

The earliest written mentions of Wettswil am Albis date back to 1184 where it is referred to as Wettesweilare.

The village is believed to have been settled during the period of Alemannic immigration into Switzerland (somewhere between 500 and 700 CE).