Past Presidents
The following members served as President of the Institute (the Society, prior to July 2013) during the years indicated. Terms of office run from the Annual General Meeting in the first year indicated until the end of the Annual General meeting in the second year indicated. For the past five plus years, the AGM has been held in or about the third week of July.
| 1957- 1963 | J. | Aspinal |
| 1963 – 1964 | A | Hilhorst |
| 1964 | R.T. | Jamieson |
| 1964 – 1965 | M.M. | Muller |
| 1965 – 1966 | P.C. | Pirow |
| 1966 – 1967 | E.S. | Russell |
| 1967 – 1968 | R.C. | Lloyd |
| 1968 – 1969 | W. | Carine |
| 1969 | H.N. | Van der Merwe |
| 1969 – 1970 | H.H. | Knothe |
| 1970 – 1971 | V. | Marting |
| 1971 – 1972 | V.E. | Andries |
| 1972 – 1973 | H.F.B. | Nel |
| 1973 – 1974 | A.O. | Bischoff |
| 1974 – 1975 | G.D. | Van der Veer |
| 1975 – 1977 | J.J | Van Rensburg |
| 1977 – 1978 | N.M. | Duffy |
| 1978 – 1980 | H.W. | Le Roux |
| 1980 – 1981 | D.H. | Edwards |
| 1981 – 1983 | T.C. | Bouwer |
| 1983 – 1985 | G. | Wiechers |
| 1985 – 1987 | E.S.H. | Davies |
| 1987 – 1989 | J.H.K. | Mattison |
| 1989 – 1991 | C.S. | Palmer |
| 1991 – 1993 | P. | Opperman |
| 1993 – 1995 | P.L. | Davies |
| 1995 – 1997 | S.J. | Reynolds |
| 1997 – 1999 | Dr. J. | Miller |
| 1999 – 2001 | P. | Aspinall |
| 2001 – 2003 | E. | Roberg |
| 2003 – 2004 | R.S. | Moodley |
| 2004 – 2008 | Ms. M.C. | De Roche |
| 2008 – 2012 | M.A. | Schofield |
| 2012 – 2014 | Dr. R. | Dagada |
| 2014 – 2015 | W. | Matope |
| 2015 – 2019 | Ms. U. | Exner |
