The Cymru Fydd (Young Wales; Welsh pronunciation: [ˈkəmri ˈvi:ð]) movement was founded in 1886 by some of the London Welsh, including J. E. Lloyd, O. M. Edwards, T. E. Ellis (leader, MP for Merioneth, 1886–1899), Beriah Gwynfe Evans and Alfred Thomas. Initially it was a purely London-based society, later expanding to cities in England with a large Welsh population.
The founders of Cymru Fydd were influenced by the nationalist movement in Ireland, although the movement also drew upon other ideas, including a sense of imperial mission as preached by John Ruskin and a programme of social and political reform promoted by Arnold Toynbee and the Fabian Society. This was therefore in stark contrast to Irish Nationalism, under Charles Stewart Parnell and others, which sought separation from British political structures. The movement resembled the cultural nationalism found in parts of continental Europe, and heavily influenced by members of the intelligentsia such as O.M. Edwards and J.E. Lloyd.
From 1892 branches were organised in Wales itself, the first being formed at Barry by W. Llewelyn Williams.
Its main objective was to gain self-government for Wales. The movement lost some of its impetus following the withdrawal of T. E. Ellis to join the Government in 1892, after which the leadership of Cymru Fydd was taken over by David Lloyd George and Herbert Lewis (MP for Flint Boroughs). Cymru Fydd was re-launched on a narrower, more political basis.