The fourth election to the Llandeilo Rural District Council was held in March 1904.
[1] It was preceded by the 1901 election and followed by the 1907 election.
The successful candidates were also elected to the Llandeilo Board of Guardians.
There were a number of unopposed returns in the rural parishes.
[2] Following the formation of Ammanford Urban District Council in 1903, the number of seats for the Betws and Llandybie parishes were reduced as parts of these parishes formed the new Urban District.