| Castagnac | Castagnac |
| castagnette | castanet |
| castagnettes | castanets |
| Castalie | Castalia |
| Castanet-le-Haut | Castanet-le-Haut |
| Castanopsis | Castanopsis |
| Castanospermum australe | Castanospermum |
| Castasegna | Castasegna |
| caste | coterie |
| Casteggio | Clastidium |
| Castejón | Castejón |
| Castel del Monte | Castel del Monte |
| Castel di Judica | Castel di Judica |
| Castel Focognano | Rassina |
| Castel Gandolfo | Castel Gandolfo |
| Castel Maggiore | Castel Maggiore |
| Castel San Pietro | Castel San Pietro |
| Castel Viscardo | Castel Viscardo |
| Castelbello-Ciardes | Kastelbell-Tschars |
| Castelfranco Veneto | Castelfranco Veneto |
| Castell-nedd Port Talbot | Neath Port Talbot |
| Castellammare di Stabia | Castellammare di Stabia |
| Castellane | Castellane |
| Castelli | Castelli |
| Castelli de Saint-Marin | List of cities in San Marino |
| Castello Sforzesco | Castello Sforzesco |
| Castello-di-Rostino | Castello-di-Rostino |
| Castellum | Castellum |
| Castellón de la Plana | Castellón de la Plana |
| Castelmarte | Castelmarte |
| Castelmoron-sur-Lot | Castelmoron-sur-Lot |
| Castelnau-Lassouts | Castelnau-Lassouts |
| Castelo Branco | Castelo Branco |
| Castelo de Paiva | Castelo de Paiva |
| Castelo de São Jorge | Castle of São Jorge |
| Castelrotto | Kastelruth |
| Castelsarrasin | Castelsarrasin |
| Castelvetrano | Castelvetrano |
| Castelvittorio | Castelvittorio |
| Castets-en-Dorthe | Castets-en-Dorthe |
| Casti-Wergenstein | Casti-Wergenstein |
| Castiel | Castiel |
| Castiglioncello | Castiglioncello |
| Castiglione | Castiglione |
| castillan | Spanish |
| Castillan argentin | Rioplatense Spanish |
| Castillan chilien | Chilean Spanish |
| Castille | Castile |
| Castille-et-León | Castile and León |
| Castille-et-Léon | Castilla y Léon |
| Castille-La Manche | Castile-La Mancha |
| Castillo | Castillo |
| Castillon-la-Bataille | Castillon-la-Bataille |
| Castillon-sur-Lez | Castillon-sur-Lez |
| Castillon-sur-Verdon | Castillon-sur-Verdon |
| Castillonuevo | Castillo-Nuevo |
| Castine | Limestone |
| Castinus | Castinus |
| Castle Clinton National Monument | Castle Clinton |
| Castle Howard | Castle Howard |
| Castle of Illusion | Castle of Illusion Starring Mickey Mouse |
| Castle-Bruce | Castle Bruce |
| Castlebar | Castlebar |
| Castletown | Castletown |
| castor | beaver |
| Castor affairé | Busy beaver |
| Castor de Karden | Castor |
| Castoridae | Castoridae |
| Castoroides ohioensis | Giant Beaver |
| Castors Juniors | The Junior Woodchucks |
| castrat | eunuch |
| castration | castration |
| castrer | alter |
| Castres olympique | Castres Olympique |
| Castries | Castries |
| Castrisch | Castrisch |
| Castro | Castro |
| Castro-Urdiales | Castro Urdiales |
| Castrop-Rauxel | Castrop-Rauxel |
| Castruccio Castracani | Castruccio Castracani |
| castré | castrated |
| Casuals | Casuals |
| Casuariidae | Casuariidae |
| Casuarinaceae | Casuarinaceae |
| casuiste | casuist |
| casuistique | casuistry |
