Caledon, Camlough, Campsie, Capecastle, Cappagh, Cargan, Carnalbanagh, Carncastle, Carnlough, Carnteel, Carrickaness, Carrickfergus, Carrickmore, Carrowclare, Carrowdore, Carrybridge, Carryduff, Castlecaulfield, Castledawson, Castlederg, Castlerock, Castlewellan, Charlemont, Clabby, Clady (Co. Londonderry), Clady (Co. Tyrone), Cladymore, Clanabogan, Claudy, Clogh, Clogher, Cloghy, Clonmore, Clonoe, Clough, Cloughmills, Coagh, Coalisland, Cogry-Kilbride, Coleraine, Collegeland, Comber,(convoy) Conlig, Cookstown, Corbet, Corrinshego, Craigarogan, Craigavon, Cranagh, Crawfordsburn, Creagh, Creggan, Crossgar, Crossmaglen, Crumlin, Cullaville, Cullybackey, Cullyhanna, Culmore, Culnady, Curran, Cushendall, Cushendun