| Name | Year | Details |
| Martin Caborn-Smith | 1975 | Semi-finalist |
| Colin Cadby | 1997 | Finalist |
| Edward Calden | 1988 | |
| Alan Caig | 1980 | |
| Peter Cains | 1986 | |
| R Cairns | 1973 | |
| Hamish Cameron | 1990 | Semi-finalist |
| 2000 | ||
| 2003 | Semi-finalist | |
| 2005 | ||
| Archie Campbell | 1973 | Semi-finalist |
| Iain Campbell | 1979 | Semi-finalist |
| John Campbell | 1980 | Semi-finalist |
| Katrina Campbell | 1997 | |
| David Campbell-Suttie | 1986 | |
| Paul Campion | 1983 | Semi-finalist |
| Colin Capell | 1994 | |
| Rupert (Bob) Capper | 1974 | Semi-finalist |
| 1995 | ||
| Richard Carden | 1975 | |
| Hilary Carlisle | 1988 | |
| Antony Carr | 1975 | Semi-finalist |
| David Carroll | 1989 | |
| Christopher Carter | 1984 | |
| 1999 | Champion | |
| Judith Carter | 1981 | |
| Alicia Cash | 1997 | |
| Con Cashman | 1979 | |
| Wayne Cassar | 1989 | |
| Peter Castree | 1990 | |
| Sarah Catling | 1979 | |
| William Cawley | 1992 | |
| William Chalmers | 1977 | Semi-finalist |
| Peter Chapman | 1986 | |
| Robin Chapman | 2005 | Finalist |
| Anirudh Chari | 2004 | Semi-finalist |
| Malcolm Charles | 1995 | Semi-finalist |
| Liz Chase | 1995 | |
| Himadri Chatterjee | 1992 | |
| Godfrey Chesshire | 1984 | |
| John Chester | 1987 | Semi-finalist |
| Michael Chilton | 1986 | |
| Peter Chitty | 1987 | |
| 1998 | ||
| Micheal Chivers | 1994 | Semi-finalist |
| Valerie Chown | 2005 | |
| Ian Christie | 1985 | |
| Ian Clark | 1974 | Semi-finalist |
| Jack Clark | 1990 | |
| Michael Clark | 1990 | Semi-finalist |
| Steve Clark | 2003 | Semi-finalist |
| Sue Clark | 1977 | |
| John Clarke | 1999 | Finalist |
| Leslie Clarke | 2000 | |
| Graham Clayton | 1989 | |
| Phillip Clayton-Gore | 1986 | |
| Chris Clode | 2000 | Semi-finalist |
| Robert Close | 1994 | |
| Richard Coast-Smith | 1980 | |
| James Coates | 1975 | |
| Michael Codner | 1995 | |
| John Coggrove | 1994 | Semi-finalist |
| Neville Cohen | 1984 | Semi-finalist |
| Alan Colby | 1991 | |
| John Coleby | 1973 | Finalist |
| Charles Coleman | 1972 | |
| Sharon Colesell | 1985 | Semi-finalist |
| Miriam Collard | 1996 | Semi-finalist |
| 1998 | Finalist | |
| John Colman | 1973 | Semi-finalist |
| John Colverson | 1993 | Semi-finalist |
| George Combe | 1987 | |
| Elizabeth Compton | 1979 | |
| Pat Connolly | 2005 | |
| Allan Cook | 2004 | Semi-finalist |
| D Cook | 1972 | |
| Jim Cook | 2004 | Finalist |
| Christopher Cooke | 1980 | Semi-finalist |
| Graham Cooke | 1987 | |
| 1996 | ||
| Brain Cooklin | 1983 | |
| Ivor Cooksey | 1986 | Semi-finalist |
| David Coombs | 1990 | |
| Jolyon Coombs | 1978 | Semi-finalist |
| Amanda Cooper | 1980 | |
| Ken Cooper | 1972 | |
| 1998 | ||
| Sally Copeland | 1973 | |
| Iain Copland | 1978 | |
| 2004 | Semi-finalist | |
| Jeremy Cotton | 1999 | |
| Tom Corfe | 1974 | |
| Glyn Court | 1975 | |
| Barbara Courtney-Wildman | 1973 | |
| David Cowan | 1994 | Semi-finalist |
| Robert Cowan | 1996 | |
| Adrian Cowell | 1980 | |
| Anne Cowen | 1992 | |
| Patricia Cowley | 1991 | |
| Julie Cox | 2004 | |
| Robert Crampsey | 1972 | Semi-finalist |
| James Craven | 1981 | Semi-finalist |
| John Crawford | 1981 | |
| Donald Crerar | 1986 | Semi-finalist |
| Martin Cresdee | 1995 | |
| Simon Creswell | 1985 | |
| John Crichton | 1989 | |
| Cecil Crill | 1975 | |
| John Crippin | 1987 | Finalist |
| Michael Crisp | 1980 | |
| Barney Crockett | Unknown | |
| Neil Crockford | 1975 | Semi-finalist |
| 2005 | Finalist | |
| Stewart Cross | 1987 | |
| 1999 | ||
| 2004 | ||
| Kith Crosswell | 1974 | |
| Janet Crowe | 1997 | |
| Frank Crowhurst | 1987 | |
| R Cruse | 1973 | |
| Robert Currie | 1993 | |
| 2005 | ||
| Andrew Curtis | 1995 | Semi-finalist |