| Cisse, Ibrahima | Standard Liège (BEL) / Belgium U21 / Belgium U19 |  Belgium | Midfield |
| Cissé, Papiss | Newcastle (ENG) |  Senegal | Forward |
| Cissé, Salim | Académica (POR) |  Guinea | Forward |
| Cissokho, Aly | Valencia (ESP) |  France | Defender |
| Čistjakovs, Valerijs | Daugava Rīga (LVA) / Latvia U21 |  Latvia | Forward |
| Citaku, Gentrit | Sweden U17 |  Sweden | Forward |
| Ciucă, Mădălin | Gaz Metan (ROU) |  Romania | Defender |
| Ciupe, Raul | U Cluj (ROU) | Romania | Defender |
| Ciuperca, Valeriu | Moldova U21 |  Russia | Midfield |
| Ciupińska, Anna | Poland WOCO |  Poland | Midfield |
| Ćiva, Adin | Bosnia and Herzegovina U19 |  Bosnia and Herzegovina | Midfield |
| Civelli, Renato | Nice (FRA) |  Argentina | Defender |
| Čivić, Eldar | Bosnia and Herzegovina U17 | Bosnia and Herzegovina | Defender |
| Čizmar, Boris | Serbia FUT |  Serbia | Defender |
| Čižova, Elizabete | Latvia WU19 | Latvia | Defender |
| Claesson, Viktor | Elfsborg (SWE) / Sweden U21 | Sweden | Midfield |
| Clancy, Timothy | Hibernian (SCO) |  Republic of Ireland | Defender |
| Clark, Chris | Aberdeen (SCO) |  Scotland | Forward |
| Clark, Ciaran | Aston Villa (ENG) / Republic of Ireland | Republic of Ireland | Defender |
| Clark, Kelly | Scotland WU19 | Scotland | Defender |
| Clark, Zander | St Johnstone (SCO) |  England | Goalkeeper |
| Clarke, Jessica | Leeds Carnegie (ENG) / England WOCO | England | Forward |
| Clarke, Matthew | Northern Ireland U19 |  Northern Ireland | Defender |
| Clarke, Tomos | Wales U17 |  Wales | Defender |
| Clarke, Cameron | Wales U17 | Wales | Goalkeeper |
| Clarke, Liam | Gibraltar FUT |  Gibraltar | Defender |
| Clarkson, Michael | Stoke (ENG) | England | Midfield |
| Clasie, Jordy | Feyenoord (NED) / Netherlands U21 / Netherlands |  Netherlands | Midfield |
| Claudemir | København (DEN) |  Brazil | Midfield |
| Cláudia Neto | Portugal WOCO |  Portugal | Forward |
| Cláudia Teixeira | Portugal WOCO | Portugal | Defender |
| Clausen, Marit | Norway WU17 |  Norway | Midfield |
| Cleary, Daniel | Republic of Ireland U17 | Republic of Ireland | Defender |
| Cleiton Xavier | Metalist (UKR) | Brazil | Midfield |
| Clemens, Christian | Köln (GER) / Germany U21 |  Germany | Midfield |
| Clément, Jérémy | St-Étienne (FRA) | France | Midfield |
| Clemente, Ludovic | Encamp (AND) / Andorra |  Andorra | Forward |
| Clementsen, Aron | Faroe Islands U17 |  Faroe Islands | Midfield |
| Clemmensen, Magnus | Luxembourg U19 |  Luxembourg | Midfield |
| Clerc, François | St-Étienne (FRA) | France | Defender |
| Clever | Portugal U17 | Portugal | Midfield |
| Cleverley, Tom | Man. United (ENG) / England | England | Midfield |
| Cleyton | Kayserispor (TUR) | Brazil | Midfield |
| Cleyton | Académica (POR) | Brazil | Midfield |
| Clichy, Gaël | Man. City (ENG) / France | France | Defender |
| Clifford, Clement | København (DEN) / Denmark FUT |  Denmark | Forward |
| Clifford, Conor | Crawley (ENG) / Republic of Ireland / Republic of Ireland U21 | Republic of Ireland | Midfield |
| Clingan, Sammy | Kilmarnock (SCO) / Northern Ireland | Northern Ireland | Midfield |
| Clucas, Seanan | Preston (ENG) / Northern Ireland U21 | Northern Ireland | Midfield |
| Clyne, Nathaniel | Southampton (ENG) / England U21 | England | |
