HMS St Christopher was a Coastal Forces training base of the Royal Navy operational during the Second World War and located in and around Fort William, Scotland.

Welman DSO DSC RN, and existed to train the crews of a variety of different inshore patrol craft.

The base had a staff of several hundred, billeted in hotels around the town, with extra space being provided by Nissen huts.

After the base closed in 1944 she was towed to Trincomalee in Ceylon (now Sri Lanka), where she replaced AFD 23 which had been damaged beyond repair in an accident.

The base is also commemorated in the name of the Lochaber Sea Cadet unit's current training ship, the TS St Christopher.