Men tennis players : c
- C Diederichs
- C Graham
- C J Bendall
- C Robinson
- C Rudman
- C Ryan
- C Wijono
- C. Floe
- C. Mora
- C. Munoz
- C. Sakolsky
- C. Shaw
- Cahit Atas
- Caio Zampieri
- Cakans
- Calvin Hemery
- Cameron Milne
- Carey Brading
- Carl Chang
- Carl Clark
- Carl Heddrick
- Carl Limberger
- Carl Soderlund
- Carl Turich
- Carl-Axel Hageskog
- Carl-Edvard Hedelund
- Carl-Uwe Steeb
- Carlo Borea
- Carlo Santoro
- Carlo Zugarelli
- Carlos Aguilar
- Carlos Alvarez
- Carlos Behar
- Carlos Berlocq
- Carlos Castellan
- Carlos Chabalgoity
- Carlos Claverie
- Carlos Costa
- Carlos Cuadrado
- Carlos Di laura
- Carlos Drada
- Carlos Eduardo Severino
- Carlos Feldstedt
- Carlos Gattiker
- Carlos Gomez
- Carlos Gomez-diaz
- Carlos Gomez-Herrera
- Carlos Junquet
- Carlos Kirmayr
- Carlos Lando
- Carlos Lopez
- Carlos Martinez
- Carlos Moya
- Carlos Proano
- Carlos Romero
- Carlos Salamanca
- Carlos-Alberto Fernandes
- Carsten Arriens
- Carsten Ball
- Cary Cohenour
- Cary Franklin
- Cary Leeds
- Cary Lothringer
- Cary Stansbury
- Cassio Motta
- Catalin Gard
- Cattan
- Cecil Mamiit
- Cecil Pedlow
- Cedric Kauffmann
- Cedric Lenoir
- Cedric Mason
- Cedric Pioline
- Cedrik-Marcel Stebe
- Celso Sacomandi
- Cesar Kist
- Cesar Ramirez
- Chad Clark
- Chad Floe
- Chad Mooney
- Chaim Arlozorov
- Champy Halim
- Chang-Hong Ni
- Chang-Rung Wu
- Charles Auffray
- Charles Beckman
- Charles Bud Cox
- Charles Buzz Strode
- Charles Chang
- Charles Darley
- Charles Hoeveler
- Charles Honey
- Charles Mckinley
- Charles Merzbacher
- Charles Owens
- Charlie Ellis
- Charlie Fancutt
- Charlie Pasarell
- Charlton Eagle
- Chase Buchanan
- Chauncey Steele iii
- Chemseddine Belal
- Cheng-Fong Chang
- Chetan Desai
- Chi-Wan Kim
- Chih-Jung Chen
- Chip Baird
- Chip Fisher
- Chip Hooper
- Chip Tolleson
- Chiradip Mukerjea
- Chiraid Mukherjea
- Chris Bailey
- Chris Baxter
- Chris Bovett
- Chris Bradnam
- Chris Burr
- Chris Decker
- Chris Degraff
- Chris Delaney
- Chris Drake
- Chris Dunk
- Chris Eaton
- Chris Ellis
- Chris Fancutt
- Chris Garner
- Chris Groer
- Chris Guccione
- Chris Gunning
- Chris Haggard
- Chris Huff
- Chris Johnstone
- Chris Kachel
- Chris Kennedy
- Chris Lewis
- Chris Lewis (nzl)
- Chris Lindoff
- Chris Louw
- Chris Mayotte
- Chris Pridham
- Chris Rae
- Chris Tontz
- Chris Wilkinson
- Chris Woodruff
- Christer Allgardh
- Christer Holm
- Christian Bergstrom
- Christian Camradt
- Christian Duxin
- Christian Feenstra
- Christian Garin
- Christian Geyer
- Christian Harrison
- Christian Hill
- Christian Janssens
- Christian Jessel
- Christian Kern
- Christian Kuhnke
- Christian Lindell
- Christian Miniussi
- Christian Pieper
- Christian Ruud
- Christian Saceanu
- Christian Vinck
- Christian Weis
- Christo Steyn
- Christo Van rensburg
- Christoph Geukens
- Christoph Meyer
- Christoph Zipf
- Christophe Au couturier
- Christophe Bernelle
- Christophe Casa
- Christophe Freyss
- Christophe Lesage
- Christophe Pognon
- Christophe Rochus
- Christophe Roger-vasselin
- Christophe Van garsse
- CHRISTOPHER EUBANKS
- Christopher Kas
- Christopher Kaskow
- Christopher Koderisch
- Christopher Marquis
- Christopher O'Connell
- Christopher Sylvan
- Christopher Wolff
- Chuck Adams
- Chuck De voe
- Chuck Mckinley
- Chuck Willenborg
- Chuhan Wang
- Cimurri
- Ciprian Porumb
- Clark Graebner
- Claude Boutard
- Claude De gronckel
- Claude England
- Claude N'goran
- Claudio Mezzadri
- Claudio Panatta
- Claudio Pistolesi
- Clay Iles
- Clay Thompson
- Clemens Trimmel
- Clement Larriere
- Clement N'goran
- Clement Reix
- Cliff Buchholz
- Cliff Drysdale
- Cliff Letcher
- Cliff Mayne
- Cliff Montgomery
- Cliff Richey
- Cliff Skakle
- Clint Bowles
- Clint Letcher
- Clinton Banducci
- Clinton Ferreira
- Clinton Marsh
- Clive Brebnor
- Clive Kightley
- Clive Wilderspin
- Colin Beecher
- Colin Dibley
- Colin Dowdeswell
- Colin Ebelthite
- Colin Fleming
- Colin Grant
- Colin Mchugo
- Colin Rees
- Colin Robertson
- Colin Stubs
- Colin Zeeman
- Collin Altamirano
- Conny Falk
- Conor Niland
- Constant Lestienne
- Constantinos Efremoglou
- Corey Wittenberg
- Corky Meinhardt
- Corrado Aprili
- Corrado Barazzutti
- Corrado Borroni
- Craig A Miller
- Craig Boynton
- Craig Campbell
- Craig D Miller
- Craig Edwards
- Craig Johnson
- Craig Kardon
- Craig Tregonning
- Craig Venter
- Craig Wittus
- Crawford Henry
- Cristian Araya
- Cristian Brandi
- Cristian Villagran
- Cristiano Caratti
- Cristiano Testa
- Cristobal Saavedra-Corvalan
- Cumhur Ongen
- Curt Stalder
- Cyril Francois
- Cyril Rudman
- Cyril Saulnier
- Cyril Suk