Abtenau is a market town in the Hallein District of the state of Salzburg, Austria. It lies in the Lammertal within the Tennengau region, roughly 45 kilometres (28 miles) south of the city of Salzburg.
The municipality encompasses the entire middle valley of the Lammer river, which gives the surrounding Lammertal its name. Its position in this alpine valley defines the town's setting within the Salzburg landscape.