| Secretary | Assistant/others | Period of Office |
| Dr J Dickson | | 02/11/1862 to 30/10/1867 |
| | William M'Ilwraith | 20/11/1862 to 01/11/1864 |
| | Dr Kerr | 01/11/1864 to 07/11/1865 |
| | Dr James Gilchrist | 07/11/1865 to 05/11/1867 |
| A D Murray | | 05/11/1867 to 07/12/1869 |
| | Thomas Corrie | 05/11/1867 to 07/12/1869 |
| Thomas Corrie | | 07/12/1869 to |
|
Robert Service |
| 03/11/1876 to 13/10/1882 |
| | James Lennox | 04/10/1878 to 07/10/1881 |
| |
Alfred Edgar Truckell |
11/11/1881 to 13/10/1882 |
| | Samuel Chrystie | 07/10/1881 to 03/10/1884 |
| J Rutherford | | 13/10/1882 to 03/10/1884 |
| Joseph Wilson | | 03/10/1884 to 29/06/1888 |
| | R Barbour | 03/10/1884 to 29/06/1888 |
| R Barbour | | 29/06/1888 to 24/05/1889 |
| Dr E J Chinnock | | 24/05/1889 to 30/07/1897 |
| Dr J Maxwell Ross | | 30/07/1897 to 10/05/1901 |
| | Rev W Andson | 19/10/1899 to 26/10/1900 |
| | Bertram M'Gowan | 16/10/1900 to 10/05/1901 |
| Bertram M'Gowan | | 10/05/1901 to 17/10/1902 |
| John A Moodie | | 17/10/1902 to 02/06/1905 |
|
Samuel Arnott |
| 02/06/1905 to 21/10/1910 |
|
George W Shirley |
| 21/10/1910 to 1928 |
| | Robert Wallace | 1915 to 1916 |
| | James Flett | 1916 to 1919 |
| Miss L R Andrews | | 1928 to 1929 |
| Mrs E Shirley | | 1929 to 1935 |
| J Egar | | 1935 to 1936 |
| J B M'Gowan | | 1936 to 1940 |
| S Marks | R C Reid | 1940 to 1944 |
|
Professor Balfour-Browne |
| 1944 to 1949 |
| David Cunningham | Mrs D Cunningham | 1949 to 1950 |
| Mrs C F Service | | 1950 to 1953 |
| Mrs D Cunningham | | 1953 to 1956 |
| B F D Harris | | 1956 to 1959 |
| | Miss M L Fairbairn | 1956 to 1963 |
| Alex Robertson | | 1959 to 1961 |
| Mrs S M Weeks | | 1961 to 1964 |
| | Mrs R McAdam | 1963 to 1964 |
| Mrs R McAdam | Dr William McAdam | 1964 to 1970 |
| Mrs Pauline G Williams | James Williams | 1970 to 1974 |
| Mrs Eva Adamson | Duncan Adamson | 1974 to 1979 |
| A Tyres | Mrs Tyers | 1979 to 1982 |
| | Mrs Eva Adamson (Syllabus) | 1981 to 1982 |
| R H McEwen | | 1982 to 1991 |
| | Mrs Eva Adamson (Membership) | 1982 to 1984 |
| | Duncan Adamson (Minutes) | 1982 to 1983 |
| | W F Prentice (Syllabus) | 1982 to 1989 |
| | Alex Anderson (Minutes) | 1983 to 1986 |
| | Mrs Jean Muir (Minutes) | 1986 to 1989 |
| | Miss Marion Stewart (Minutes) | 1989 to 1995 |
| Mrs Jean Muir | | 1991 to 1996 |
| | Mrs Marian Rochester (Membership) | 1991 to |
| | Mrs J Taylor (Minutes) | 1995 to 1999
|
| Mark White | | 1996 to 2001 |
| | Robert Hope (Minutes) | 2000 to 2003 |
| R H McEwen | | 2002 to 2007 |
| | Mrs Eileen Toolis (Syllabus) | 2004 to 2010 |
| John L Williams | | 2007 |
