John Davies (died 25 July 1918) was a Welsh politician and trade unionist, who served as Mayor of Merthyr.
Four years later, he returned to live with his father in Hirwaun, and began working at a local coal mine.
He became active in the local trade union, the Aberdare, Merthyr and Dowlais Miners' Association, and when he was 27 he was elected to its executive committee.
[1] After the strike, the South Wales Miners' Federation (SWMF) was established, and the local union was split into three districts.
Soon after, he won election as full-time miners' agent for the Dowlais District, relocating to the area, and remained in the post until his death.