| Castellucci | Castelluccio | Castelluccio (disambiguation) |
| Castelluccio (Norcia) | Castelluccio Airfield | Castelluccio Cosentino |
| Castelluccio culture | Castelluccio Culture | Castelluccio dei Sauri |
| Castelluccio dei sauri | Castelluccio di Noto | Castelluccio Inferiore |
| Castelluccio Superiore | Castelluccio Valmaggiore | Castelluccio, Norcia |
| Castellum | Castellum Alteium | Castellum Dimmidi |
| Castellum Firmanum | Castellum Honesti | Castellum Iabar |
| Castellum in monte tauno | Castellum Ladies Open | Castellum Lucullanum |
| Castellum Medianum | Castellum Minus | Castellum Montis Peregrini |
| Castellum of Abrud | Castellum of Badeni | Castellum of Baile Homorod |
| Castellum of Bădeni | Castellum of Băile Homorod | Castellum Onagrinum |
| Castellum Phuensium | Castellum Ripae | Castellum Tatroportus |
| Castellum Tidditanorum | Castellum Tingitanum | Castellum Tingitii |
| Castellví | Castellví de la Marca | Castellví de Rosanes |
| Castellvell del Camp | Castellvi | Castellvi de la Marca |
| Castellvi de Rosanes | Castellvi Peak | Castelmaggiore, Calci |
| Castelmagno | Castelmagno (cheese) | Castelmagno cheese |
| Castelmarte | Castelmary | Castelmassa |
| Castelmauro | Castelmaurou | Castelmayran |
| Castelmerle | Castelmezzano | Castelmezzano dialect |
| Castelmezzano language | Castelmola | Castelmoron-d'Albret |
| Castelmoron-sur-Lot | Castelmur Castle | Castelmur Castle (Bondo) |
| Castelmur Castle (disambiguation) | Castelmur Castle (Stampa) | Castelmuzio |
| Castelnau | Castelnau (disambiguation) | Castelnau (North Barnes) |
| Castelnau de Montmiral | Castelnau Lake | Castelnau Le Crès FC |
| Castelnau Le Cres FC | Castelnau's antshrike | Castelnau's Antshrike |
| Castelnau's wrasse | Castelnau, London | Castelnau-Barbarens |
| Castelnau-Chalosse | Castelnau-d'Anglès | Castelnau-d'Angles |
| Castelnau-d'Arbieu | Castelnau-d'Aude | Castelnau-d'Auzan |
| Castelnau-d'Auzan-Labarrère | Castelnau-d'Estrétefonds | Castelnau-d'Estrétefonds railway station |
| Castelnau-d'Estrétefonds station | Castelnau-d'Estretefonds | Castelnau-d’Auzan |
| Castelnau-de-Brassac | Castelnau-de-Guers | Castelnau-de-Lévis |
| Castelnau-de-Levis | Castelnau-de-Mandailles | Castelnau-de-Médoc |
| Castelnau-de-Medoc | Castelnau-de-Montmiral | Castelnau-Durban |
| Castelnau-le Crès FC | Castelnau-le Cres FC | Castelnau-le-Lez |
| Castelnau-Le-Lez | Castelnau-Magnoac | Castelnau-Montratier |
| Castelnau-Montratier (delegated commune) | Castelnau-Montratier-Sainte-Alauzie | Castelnau-Pégayrols |
| Castelnau-Pegayrols | Castelnau-Picampeau | Castelnau-Rivière-Basse |
| Castelnau-Riviere-Basse | Castelnau-sur-Gupie | Castelnau-sur-l'Auvignon |
| Castelnau-Tursan | Castelnau-Valence | Castelnaud |
| Castelnaud-de-Gratecambe | Castelnaud-la-Chapelle | Castelnaudary |
| Castelnaudary - Villeneuve Airport | Castelnaudary – Villeneuve Airport | Castelnaudary station |
| Castelnaudia | Castelnavet | Castelnavia |
| Castelneau | Castelner | Castelnou |
| Castelnou, Pyrénées-Orientales | Castelnou, Pyrenees-Orientales | Castelnou, Spain |
| Castelnou, Teruel | Castelnoudari | Castelnovetto |
| Castelnovo | Castelnovo (disambiguation) | Castelnovo Bariano |
| Castelnovo del Friuli | Castelnovo del friuli | Castelnovo di Sotto |
| Castelnovo di sotto | Castelnovo Monti | Castelnovo ne' Monti |
| Castelnuova | Castelnuovo | Castelnuovo (Assisi) |
| Castelnuovo (disambiguation) | Castelnuovo (medieval Herceg Novi) | Castelnuovo (surname) |
| Castelnuovo (TN) | Castelnuovo - de Franchis theorem | Castelnuovo – de Franchis theorem |
| Castelnuovo Belbo | Castelnuovo Berardenga | Castelnuovo Bocca d'Adda |
| Castelnuovo Bocca d’Adda | Castelnuovo Bormida | Castelnuovo bound |
| Castelnuovo Bozzente | Castelnuovo Calcea | Castelnuovo Cilento |
| Castelnuovo curve | Castelnuovo d'Asti | Castelnuovo dei Sabbioni |
| Castelnuovo del Garda | Castelnuovo del garda | Castelnuovo del Garda railway station |
| Castelnuovo dell'Abate | Castelnuovo della Daunia | Castelnuovo della daunia |
| Castelnuovo della Misericordia | Castelnuovo di Berardenga | Castelnuovo di Cattaro |
| Castelnuovo di Ceva | Castelnuovo di ceva | Castelnuovo di Conza |
| Castelnuovo di conza | Castelnuovo di Farfa | Castelnuovo di farfa |
| Castelnuovo di Garfagnana | Castelnuovo di garfagnana | Castelnuovo di Porto |
| Castelnuovo di porto | Castelnuovo di Quero | Castelnuovo di San Pio |
| Castelnuovo di Val di Cecina | Castelnuovo di val di cecina | Castelnuovo Don Bosco |
| Castelnuovo don Bosco | Castelnuovo extremal curve | Castelnuovo Garfagnana |
| Castelnuovo Guido | Castelnuovo in Val di Cecina | Castelnuovo Magra |
| Castelnuovo Nigra | Castelnuovo Parano | Castelnuovo Rangone |
| Castelnuovo regularity | Castelnuovo Scalo | Castelnuovo Scrivia |
| Castelnuovo surface | Castelnuovo theorem | Castelnuovo Val di Cecina |
| Castelnuovo's contraction theorem | Castelnuovo's theorem | Castelnuovo, Assisi |
| Castelnuovo, Avezzano | Castelnuovo, San Pio delle Camere | Castelnuovo, Trentino |
| Castelnuovo, Trento | Castelnuovo-de Franchis theorem | Castelnuovo-Mumford regularity |
| Castelnuovo-Richmond quartic | Castelnuovo-Richmond-Igusa quartic | Castelnuovo-Tedesco |
| Castelnuovo–de Franchis theorem | Castelnuovo–Mumford regularity | Castelnuovo–Richmond quartic |
| Castelnuovo–Richmond–Igusa quartic | CastelnuovoSandrà | Castelo |
| Castelo (disambiguation) | Castelo (Lisbon) | Castelo (Rio de Janeiro) |
| Castelo Branco | Castelo Branco (Assembly of the Republic constituency) | Castelo Branco (cheese) |
| Castelo Branco (disambiguation) | Castelo Branco (district) | Castelo Branco (Horta) |
| Castelo Branco castle | Castelo Branco Castle | Castelo Branco cheese |
| Castelo branco cheese | Castelo Branco District | Castelo Branco district |
| Castelo Branco FA | Castelo Branco Football Association | Castelo Branco Municipality |
| Castelo Branco Parish | Castelo Branco Polytechnic | Castelo Branco Polytechnic Institute |
| Castelo Branco Polytechnical Institute | Castelo Branco, Azores | Castelo Branco, Camilo |
| Castelo Branco, Portugal | Castelo da Algoso | Castelo da D. Chica |
| Castelo da Dona Chica | Castelo da Feira | Castelo da Guarda |
| Castelo da Lousa | Castelo da Lousã | Castelo da maia |
| Castelo da Maia | Castelo da Maia Ginasio Clube | Castelo da Póvoa |
| Castelo da Povoa | Castelo da Senhora da Luz | Castelo da Vidigueira |
| Castelo da Vidigueira (Évora) | Castelo da Vidigueira (Evora) | Castelo de Abrantes |
| Castelo de Alcacer do Sal | Castelo de Alcanede | Castelo de Alcantarilha |
| Castelo de Alcácer do Sal | Castelo de Alcobaça | Castelo de Alcobaca |
| Castelo de Alcoutim | Castelo de Alegrete | Castelo de Alenquer |
| Castelo de Alfaiates | Castelo de Alfeizerao | Castelo de Alfeizerão |
| Castelo de Algoso | Castelo de Aljezur | Castelo de Aljustrel |
| Castelo de Almeida | Castelo de Almourol | Castelo de Alter do Chao |
| Castelo de Alter do Chão | Castelo de Alter Pedroso | Castelo de Alva |
| Castelo de Alvito | Castelo de Alvor | Castelo de Amieira |
| Castelo de Amieira do Tejo | Castelo de Ansiães | Castelo de Arnóia |
| Castelo de Arnoia | Castelo de Arraiolos | Castelo de Arronches |
| Castelo de Atouguia da Baleia | Castelo de Avô | Castelo de Avis |
