Cuca Roseta

1981 -
Portuguese
Participations: 1
Representing: Portugal
Best result: DNQ

​106. Si aun te quieres quedar / DNQ - with David Bisbal
​

Cuentos Borgeanos

2002 -
Argentine
Participations: 1
Representing: Argentina
Best result: DNQ

​35. Eternidad / DNQ
​

CW7

2006 - 2016
Brazilian
Participations: 1
Representing: Brazil
Best result: DNQ

​87. Me acorde pra vida / DNQ
​

​Cyan Kicks

Finnish
Participations: 1
Representing: Finland
Best result: 10th

169. Tidal wave / 10th place
​

Cyanna

2002 - 2013
Greek
Participations: 1
Representing: Greece
Best result: DNQ

47. Shine / DNQ
​

Cyndi Almouzni

1984 -
French
Participations: 1
Representing: Netherlands*
Best result: DNQ

​93. Beautiful life / DNQ - with Armin van Buuren
​

​Cynthia Erivo

1987 -
British of Nigerian descent
Participations: 1
Representing: Nigeria
Best result: 15th

177. Stand up / 15th place
​​

Cynthia Nilson

Argentine
Participations: 1
Representing: Argentina
Best result: DNQ

​21. Verano del 98 / DNQ
​

Cyrus Villanueva

1996 -
Australian of Filipino descent
Participations: 2
Representing: Australia (1) and Philippines (1)
Best result: 17th

​124. Stone / DNQ
140. Hurt anymore / 17th place - with Samantha Jade
​

Czech Philharmonic
​Children's Choir

1932 -
Czech
Participations: 1
Representing: Czech Republic
Best result: DNQ

​85. Nase zem, nase srdce / DNQ - with Martin France, Martina Balogová & Skipe
​