Londonderry and Lough Swilly Railway
 The Londonderry and Lough Swilly Railway Company (The L&LSR the Swilly) was an Irish public transport and freight company that operated in parts of County Londonderry and County Donegal between 1853 and 2014. Incorporated in June 1853 it once operated 99 miles of railways. It began the transition to bus and freight services in 1929.