List of narrow-gauge railways in Ireland

Ireland formerly had numerous narrow-gauge railways, most of which were built to a gauge of. The last (non-preserved) line to close was the West Clare Railway in 1961 (though it has been partially preserved).

Operating

 * Foyle Valley Railway
 * Giant's Causeway and Bushmills Railway

Operating

 * Cavan and Leitrim Railway
 * Fintown Railway
 * Stradbally Woodland Railway
 * Tralee and Dingle Light Railway (Under repair)
 * Waterford and Suir Valley Railway
 * West Clare Railway
 * Note: The peat processing State enterprise, Bord na Mona, also operated narrow-gauge industrial (staff-only) railways on multiple bogs, and some may still be extant.

gauge railways
Cork Electric Tramways and Lighting Company; opened 1898, closed 1931

gauge railways
Dublin and Lucan Electric Railway; opened 1900, closed 1925

gauge railways
Steam Train Express (located in the Emerald Park (formerly Tayto Park) theme park); opened 2015 (operating)

gauge railways
The St James's Gate Brewery narrow-gauge tramway, constructed 1873, closed 1975

Northern Ireland
Bellevue Park Railway (located in Bellevue Park); opened 1933, closed 1950 (defunct - park still operating)

Republic of Ireland
Difflin Lake Railway (located in Oakfield Park); opened 2003 (operating)

Monorails
Listowel and Ballybunion Railway; opened 1888, closed 1924; partially preserved