Walzenhausen is a municipality in the canton of Appenzell Ausserrhoden in Switzerland.

Grimmenstein monastery is a small exclave of the canton of Appenzell Innerrhoden within the municipality.

During the Protestant Reformation Walzenhausen adopted the new faith, while the monastery remained catholic.

The S26 service operates one or two return journeys per hour, depending on the time of day, and offers connections at Rheineck with main line services (S-Bahn and InterRegio) to the city of St. Gallen and other towns.

Most of the population (as of 2000[update]) speaks German (92.3%), with Serbo-Croatian being second most common ( 1.7%) and Italian being third ( 1.4%).

[8] The age distribution, as of 2000[update], in Walzenhausen is; 176 people or 8.1% of the population are between 0–6 years old.