- H. Rocke Robertson 1950-1959
- A.D. McKenzie 1959-1965
- R.C. Harrison 1966-1976
- Frank P. Patterson 1976-1981
- A.D. Forward 1981-1887
- A.D. Courtemanche January – December 1988
- R.J. Finley 1989-2001
- Garth W. Warnock 2001-2011
- John W. Kestle 2013-2014
- Gary J. Redekop 2012-13, 2014 to Present
