Roman Castleford
- An account from West Yorkshire Archaeological Service about the Romans in Castleford in the wider context of the history of Roman Britain.
- http://www.arch.wyjs.org.uk/AdvSrv/indexRoman.asp?pg=Romanweb/Castleford.htm

Castleford Heritage Trust
- A community initiative to regenerate the town and preserve its heritage; information about projects, publications, activities and events, and a photo gallery.
- http://www.castlefordheritagetrust.org.uk/

Lagentium
- An account of the Roman community of Castleford, with information about archaelogical remains.
- http://www.roman-britain.org/places/lagentium.htm

Castleford Lions Club
- Information about their social and community service activities, membership, and contact details.
- http://www.wdco.org/site/Castleford-Lions-Club/

Castleford District Parks Partnership
- Information about facilities and amenities in the town's parks, an events calendar, and news. Also includes details of community group members and campaigns to improve services.
- http://www.cdpp.ik.com/

Five Towns Christian Fellowship
- Information about services and meetings; member of the Evangelical Alliance. Two congregations in Castleford and Knottingley, and developing groups in Pontefract, Featherstone and Normanton.
- http://www.5townscf.org.uk

History of Castleford
- Traces development of the borough, comments on its present state and provides links.
- http://www.castleford.org/