Twmpath (Welsh pronunciation: [ˈtʊmpaθ]) is a Welsh word literally meaning a hump or tump, once applied to the mound or village green upon which the musicians sat and played for the community to dance.

Twmpath dawnsiau were a form of barn dance organised by Urdd Gobaith Cymru in the late 1950s and 1960s for the entertainment of young people, mainly from rural areas.^[1] These events remained popular until the rise of discos in the 1970s. Twmpath is used today to mean a Welsh version of the barn dance or cèilidh.

The same word is also used to refer to a speed bump.