- Cade

- Cadell

- Caden

- Cadfael

- Cadfan

- Cadoc

- Cadogan

- Cadwalader

- Cadwgawn

- Caedmon

- Caerwyn

- Caesar

- Caetano

- Cahal

- Cahir

- Cai-Fei

- Cailean

- Cain

- Cainan

- Cairbre

- Cairo

- Cal

- Calbhach

- Caleb

- Callahan

- Callisto

- Callum

- Calogero

- Calum

- Calvagh

- Calvin

- Calvino

- Camden

- Camel

- Cameron

- Camillo

- Camilo

- Campbell

- Camron

- Can

- Candelario

- Canute

- Caoimhín

- Caolan

- Caradoc

- Caradog

- Carbrey

- Carbry

- Carey

- Carl

- Carlisle

- Carlito

- Carlitos

- Carlo

- Carlos

- Carlton

- Carlyle

- Carmelo

- Carmi

- Carmine

- Carolus

- Carpus

- Carrol

- Carroll

- Carson

- Carsten

- Carter

- Carwyn

- Cary

- Casey

- Casimir

- Casimiro

- Cassian

- Cathair

- Cathal

- Cathán

- Cathaoir

- Cayetano

- Ceallach

- Ceallagh

- Cearbhall

- Cebrián

- Cecil

- Cecilio

- Cedric

- Célestin

- Celestino

- Celino

- Celio

- Celso

- Celyn

- Cephas

- Ceri

- Cesaire

- César

- Cesare

- Cezar

- Ch'ang-Chieh

- Chabouh

- Chad

- Chadwick

- Chahan

- Chahèn

- Chaim

- Chan

- Chandan

- Chandana

- Chander

- Chandler

- Chandrakant

- Chang

- Chang-Lit

- Chang-Wei

- Chang-Yong

- Chango

- Chanh

- Channing

- Chant

- Chao

- Chao-Yang

- Chapouh

- Charles

- Charlie

- Charlot

- Charlton

- Chas

- Chase

- Chatzkel

- Chauncey

- Chavarche

- Chayim

- Chaz

- Che

- Chee-Hong

- Chee-Hwa

- Cheei-Sing

- Cheh

- Cheickh

- Chen

- Chen-Khang

- Chen-Yu

- Chenaniah

- Cheng

- Cheng-En

- Cheng-Gong

- Cheng-Hao

- Cheng-Ho

- Cheng-Ji

- Cheng-Qian

- Cheng-Yong

- Chengyuan

- Chenjeraï

- Chenork

- Chérif

- Chesley

- Chester

- Chet

- Chetana

- Cheuk-Kei

- Cheuk-Wai

- Cheuk-Yan

- Cheung

- Chhay

- Chi

- Chi-Ming

- Chi-Wing

- Chi-Yuen

- Chia-Ch'ing

- Chia-Kang

- Chia-Liang

- Chiah-Jen

- Chiang-Hui

- Chibuzo

- Chien-Po

- Chien-Shih

- Chih

- Chih-Hsiung

- Chih-Tui

- Chihab

- Chiheb

- Chile

- Chimbetu

- Chin-Yau

- Chin-Yu

- Chinamano

- Ching

- Ching-Wei

- Chinua

- Chip

- Chirag

- Chirak

- Chiraz

- Chitepo

- Chiumbo

- Chizoba

- Cho-Yun

- Chong-Yee

- Chouaib

- Chris

- Christer

- Christian

- Christmas

- Christoffer

- Christoph

- Christophe

- Christopher

- Chua-Kah

- Chucho

- Chuck

- Chuk-Yan

- Chun-Hua

- Chun-Hung

- Chun-Mun

- Chung

- Chung-Kit

- Chung-Yan

- Chus

- Chut-Sai

- Cian

- Cianán

- Ciaran

- Cillian

- Cillín

- Cináed

- Cionaodh

- Cipriano

- Ciriaco

- Cirillo

- Cirino

- Ciro

- Clancy

- Clarence

- Clark

- Claud

- Claude

- Claudio

- Claudius

- Claus

- Clay

- Clayton

- Cledwyn

- Clem

- Clemens

- Clément

- Clemente

- Cleto

- Cleve

- Cleveland

- Cliff

- Clifford

- Clifton

- Clint

- Clinton

- Clitus

- Clive

- Clovis

- Clyde

- Codie

- Cody

- Coilean

- Coinneach

- Colbert

- Colby

- Cole

- Coleman

- Colin

- Collin

- Colm

- Colmán

- Colombain

- Colombe

- Colten

- Colton

- Colum

- Columban

- Columbano

- Columbo

- Comgal

- Comgan

- Comhghall

- Comhghán

- Conall

- Conan

- Concetto

- Conchobhar

- Cong

- Conleth

- Conn

- Connell

- Connor

- Conor

- Conrad

- Conrado

- Constant

- Constantin

- Cooper

- Corbin

- Cordell

- Corentin

- Corey

- Corie

- Corin

- Cormac

- Cormag

- Cornélio

- Cornelius

- Cornell

- Corrado

- Cory

- Cosimo

- Coskun

- Cosmo

- Costantino

- Costanzo

- Coty

- Coudou

- Cowal

- Craig

- Crawford

- Cree

- Creighton

- Crescenzo

- Crispian

- Crispin

- Cristián

- Cristiano

- Cristobal

- Cristoforo

- Cristóvão

- Crofton

- Cuán

- Cuchulainn

- Culhwch

- Cullen

- Curro

- Curt

- Curtis

- Cuthbert

- Cy

- Cymbeline

- Cyril

- Cyrille

- Cyrus

- Cystenian

