Mostyn is a port village in Flintshire, north Wales.
Mostyn may also refer to:
People Surname and titles Mostyn (surname), including a list of people Baron Mostyn, in the Peerage of the United Kingdom Mostyn baronets, two lines of Welsh baronets Edward Lloyd, 1st Baron Mostyn (1768–1854) Edward Lloyd-Mostyn, 2nd Baron Mostyn (1795–1884) Gareth Williams, Baron Williams of Mostyn (1941–2003) Mostyn-Champneys baronets, County of Somerset
Given name Mostyn Armstrong (died 1791), English publisher of maps Moss Evans (1925–2002), British trade union leader Mostyn Ffrench-Williams (1914–1963), British swimmer Mostyn Hanger (1908–1980), Australian judge and administrator Mostyn Thomas (1896–1984), Welsh singer Barry Mostyn Chant (born 1938), Australian academic, pastor, and author
Places Cheshire Mostyn House School, Parkgate
Llandudno Mostyn (gallery) Mostyn (Llandudno electoral ward)
Mostyn Mostyn Colliery, a coal mine Mostyn Hall, a stately house Mostyn railway station