Seewalchen am Attersee is a market town in Upper Austria, Austria. It lies in the district of Vöcklabruck within the Hausruckviertel region, and the responsible judicial district is also Vöcklabruck.
The town has a population of 5,725. Its name associates it with the Attersee, a lake in the Salzkammergut area of Upper Austria, on which the town is situated.