Olmarch Halt railway station, previously served the hamlet and rural locale of Olmarch near Llanddewi-Brefi and Pont Llanio on the Carmarthen Aberystwyth Line in the Welsh county of Ceredigion.
The Manchester and Milford Railway (M&MR) opened from Pencader to Aberystwyth on 12 August 1867.
The Great Western Railway took over the service in 1906, and fully absorbed the line in 1911.
The OS maps and photographs show that it had one platform that survives under the road overbridge.
A limited passenger service continued running from Carmarthen to Strata Florida until February 1965.