| Cäcilia | Carly | Célino | Chet | Cinderella | Cole | Cory |
| Cäcilie | Carmel | Celio | Cheyenne | Cinda | Coletta | Cosetta |
| Cäcilius | Carmela | Cell | Chiara | Cindy | Colette | Cosette |
| Caesar | Carmelia | Cella | Chip | Cinio | Colin | Cosima |
| Cag | Carmelina | Cennan | Chita | Cino | Colja | Cosimo |
| Cagan | Carmen | Centa | Chlothilde | Ciriaco | Colleen | Cosmas |
| Cagla | Carmina | Ceren | Chlodwig | Ciril | Collin | Costa |
| Cai | Carmine | Cesaire | Chloe | Cirila | Colm | Costar |
| Caitlin | Carol | Cesar | Chlothilde | Ciro | Coloman | Costja |
| Caitlyn | Carola | César | Chresta | Cissy | Colton | Courtney |
| Caj | Carole | Cesare | Chresten | Cita | Columba | Craig |
| Cal | Carolina | Cesarina | Chris | Claartja | Columban | Cree |
| Caleb | Caroline | Cesarine | Chrissie | Claartje | Columbina | Crescens |
| Calla | Carolyn | Cesimo | Christ | Claas | Columbine | Crescentia |
| Callie | Carrie | Cesino | Christa | Claes | Conan | Cris |
| Calman | Carrol | Cesio | Christabel | Claire | Conchita | Crisia |
| Calvin | Carry | Ceslaus | Christamaria | Clamor | Concordia | Criska |
| Camer | Carson | Cetin | Christarose | Clara | Conn | Crispin |
| Cameron | Carsta | Cetinel | Christdore | Clare | Conner | Crispinus |
| Camilia | Carsten | Cetiner | Christel | Clarelia | Conni | Cristal |
| Camill | Carter | Cevri | Christer | Clarence | Connie | Cristian |
| Camilla | Cäsar | Cayan | Christfried | Clarice | Connor | Cristina |
| Camille | Cäsarina | Ceyda | Christhard | Clarie | Conny | Cristiano |
| Camillo | Cäsarine | Ceylin | Christian | Clarisa | Conor | Cristobal |
| Camillus | Cäsarius | Cezmi | Christiana | Clarissa | Conrad | Cristobál |
| Camilo | Casey | Chad | Christiane | Clarisse | Conradin | Cristof |
| Can | Casimir | Chadidja | Christie | Clarita | Consilia | Cristoph |
| Canal | Caspar | Chaim | Christin | Clark | Constance | Crystal |
| Candace | Casper | Chaled | Christina | Clarke | Constantin | Csaba |
| Candan | Cassandra | Chaleed | Christine | Clas | Constantine | Cuma |
| Candemir | Cassian | Chalid | Christlieb | Class | Constantino | Cumali |
| Candice | Cassidy | Chalida | Christmar | Claud | Constanze | Cumhur |
| Candida | Cassie | Chalis | Christo | Claude | Consuelo | Curd |
| Candidus | Cassius | Chalisa | Christobal | Claudel | Contardo | Curdin |
| Canditus | Castor | Chandler | Christobál | Claudette | Conway | Curt |
| Candogan | Cate | Chandra | Christof | Claudia | Conz | Curth |
| Candy | Caterina | Chanel | Christofer | Claudien | Cooper | Curtheinz |
| Caner | Catherine | Chantal | Christoff | Claudine | Cor | Curtis |
| Cansin | Cathérine | Chantel | Christoffer | Claudinette | Cora | Cynthia |
| Cansoy | Cathleen | Charibert | Christoph | Claudio | Coral | Cyprian |
| Cansu | Catriona | Charis | Christophe | Claudius | Coralie | Cyprianus |
| Cansunur | Cathy | Charise | Christopher | Claus | Corbin | Cyr |
| Cara | Cavin | Charissa | Christophine | Clausjürgen | Corbinian | Cyra |
| Carda | Cay | Charisse | Christophora | Clauspeter | Cord | Cyriac |
| Cardy | Cecil | Charitas | Christophorus | Clay | Cordelia | Cyriacus |
| Carel | Cecile | Charity | Christos | Clayton | Cordes | Cyriakus |
| Caren | Cecilia | Charlene | Christus | Clebert | Cordt | Cyril |
| Carey | Cecilie | Charles | Christwart | Clelia | Cordula | Cyrill |
| Carin | Cecilien | Charley | Christy | Clemens | Corell | Cyrille |
| Carina | Cecilio | Charlie | Chrysant | Clement | Coretta | Cyrillus |
| Caritas | Cecilius | Charlot | Chrysanth | Clemente | Corette | Cyrus |
| Carl | Cecily | Charlotte | Chrysantha | Clementia | Corey | |
| Carla | Cederic | Charly | Chrysanthos | Clementina | Corin | |
| Carlchristian | Cédéric | Chase | Chuck | Clementine | Corina | |
| Carley | Cedric | Chasity | Ciara | Cleo | Corinna | |
| Carlfried | Cédric | Chastity | Ciaran | Clerk | Corinne | |
| Carlfriedrich | Cedrick | Chaz | Cicito | Clieo | Cormac | |
| Carlheinrich | Celebi | Che | Ciera | Clif | Cornel | |
| Carlheinz | Celeste | Chelli | Cig | Cliff | Cornelia | |
| Carlhorst | Celestin | Chelly | Cigir | Clifford | Cornelis | |
| Carli | Celestina | Chelsea | Cihad | Clifton | Cornelius | |
| Carlina | Celestine | Chelsey | Cihan | Clint | Cornell | |
| Carljürgen | Celestino | Chen | Cihat | Clinton | Corny | |
| Carlo | Celia | Cher | Cilia | Clio | Corona | |
| Carlos | Celik | Cheri | Cilla | Clive | Corrado | |
| Carlota | Celiker | Cherie | Cille | Clodia | Corrie | |
| Carlotta | Celil | Cherilyn | Cilli | Clyde | Corry | |
| Carlpeter | Celina | Cherno | Cilly | Coby | Corsin | |
| Carlrichard | Celine | Cheryl | Cincinnato | Cody | Cort | |
| Carlton | Celino | Chester | Cincino | Colby | Corvin |