There have been two railways within the state territories of the Bailiwick of Guernsey, a British Crown Dependency comprising six inhabited islands.
- The Guernsey Railway operated from 1879 to 1934 on the principal island, Guernsey.
- The Alderney Railway opened in 1847 and continues to operate on the second largest island of the bailiwick, Alderney.
- During World War II, German engineers built, modified and extended rail lines on both Alderney and Guernsey