Llanerch-Ayron Halt was a small railway station on the Aberayron branch of the Carmarthen to Aberystwyth Line in the Welsh county of Ceredigion serving the nearby estate of Llanerchaeron.

Opened by the Lampeter, Aberayron and New Quay Light Railway, the branch to Aberayron diverged from the through line at Lampeter.

The branch was incorporated into the Great Western Railway at the Grouping of 1923, passing on to the Western Region of British Railways on nationalisation in 1948.

Passenger services were discontinued in 1951, general freight in 1963 and milk traffic from near Felin Fach ceased in 1973.

The trackbed here is now a footpath, and the platform, nameboard and pagoda-roofed GWR shelter have been restored.