Killough railway station was on the Downpatrick, Killough and Ardglass Railway, which ran from Downpatrick to Ardglass in Northern Ireland.

Opened by the Downpatrick, Killough and Ardglass Railway, it became part of the Belfast and County Down Railway. The station closed to passengers in 1950, by which time it had been taken over by the Ulster Transport Authority.

The station building and goods shed still exist with the former used for residential purposes.

Preceding station	Historical railways			Following station
Bright Halt		Belfast and County Down Railway Belfast-Ardglass		Coney Island

• Butt, R. V. J. (October 1995). The Directory of Railway Stations: details every public and private passenger station, halt, platform and stopping place, past and present (1st ed.). Sparkford: Patrick Stephens Ltd. ISBN 978-1-85260-508-7. OCLC 60251199. OL 11956311M.
• Jowett, Alan (March 1989). Jowett's Railway Atlas of Great Britain and Ireland: From Pre-Grouping to the Present Day (1st ed.). Sparkford: Patrick Stephens Ltd. ISBN 978-1-85260-086-0. OCLC 22311137.
• Jowett, Alan (2000). Jowett's Nationalised Railway Atlas (1st ed.). Penryn, Cornwall: Atlantic Transport Publishers. ISBN 978-0-906899-99-1. OCLC 228266687.

54°15′32″N 5°38′36″W / 54.258795°N 5.643421°W / 54.258795; -5.643421