Sidmouth (disambiguation)
Sidmouth may refer to:
- Sidmouth, coastal town in Devon, England
 - Sidmouth, British Columbia, former railway point in Canada
 - Sidmouth, Tasmania, locality in Australia
 - Sidmouth Rock (Tasmania)
 - Viscount Sidmouth, title in the Peerage of the United Kingdom
- Henry Addington, 1st Viscount Sidmouth (1759-1844)