Machynys, or Machynys Peninsula is a coastal area just to the south of Llanelli in Carmarthenshire, Wales. In the nineteenth century an industrial community lived here working at the brickworks and tinplate works that occupied the site. When the industrial activity ceased in the mid-twentieth century, the buildings were demolished and the site lay derelict. It has now been redeveloped as a golf course as part of the Llanelli Waterside regeneration plan.