Susch (formerly Süs) is a municipality in the district of Inn in the Swiss canton of Graubünden. On 1 January 2015 the former municipalities of Lavin and Susch merged into the municipality of Zernez.
The Flüela Pass connects Susch with Davos.
Susch is a station on the Pontresina- Scuol-Tarasp railway line. Hourly services operate on this line.