| Member Name | Organization |
|---|
| Edward Sajecki | City of Mississauga |
| Sherif Samaan | Town of Markham |
| Bhajan Sarker | City of Hamilton |
| Ezio Savini | City of Mississauga |
| Enrico Scalera | Town of Oakville |
| Pat Scanga | City of Toronto |
| James Edward Schaffner | City of Toronto |
| Ralph Scholz | Regional Municipality of Niagara |
| P. Jeffrey Seaton | |
| Mark Segsworth | Township of South Frontenac |
| Vinor Servera | Regional Municipality of York |
| Atheling Seunarine | City of Hamilton |
| Abdul Shaikh | City of Mississauga |
| Imtiaz Shaikh | City of Kawartha Lakes |
| Louis Shallal | Regional Municipality of York |
| J. David Shantz | Municipal Engineers Association (MEA) |
| Hossein Sharif | Town of Markham |
| Julie Sharma | City of Toronto |
| Kevin J. Shaw | City of Greater Sudbury |
| Robert N. Shelton | Town of Newmarket |
| Les Shepherd | United Counties of Leeds and Grenville |
| M. Shigeishi | City of Toronto |
| Lawrence Shintani | City of Toronto |
| Vik Silgailis | VAS Consulting Services Inc. |
| Ilmar Simanovskis | Town of Aurora |
| John C. Simmonds | |
| John Simon | City of London |
| Christina Sisson | City of Kawartha Lakes |
| Soran Sito | Town of Markham |
| Sunda Siva | City of Waterloo |
| Kumar Sivakumaran | City of Toronto |
| William David Slack | Regional Municipality of Niagara |
| Thom Sloley | Regional Municipality of Durham |
| David G. Smith | Regional Municipality of Niagara |
| Jeff L. Smylie | City of Mississauga |
| Richard So | Regional Municipality of York |
| Edward Soldo | City of St. Thomas |
| Hart Solomon | City of Hamilton |
| Mario Sonego | City of Windsor |
| Al Sousa | City of Mississauga |
| Filipe Sousa | City of Toronto |
| C.G. Spencer | |
| Terry Spiers | City of Brantford |
| Richard J. Spraggs | Township of Clearview |
| Greg St. Louis | City of Windsor |
| Ron Standish | City of London |
| Jillian Stephen | City of Hamilton |
| Graeme Stewart | City of Ottawa |
| Gordon Stidwill | City of Cornwall |
| Klaus Stolch | City of Brampton |
| Neil Stout | City of Ottawa |
| Robert Strachan | |
| David B. Stringer | City of St. Catharines |
| Hugh Struthers | City of Toronto |
| Zeljko Subic | City of Mississauga |
| Vincent Suffoletta | City of Guelph |
| Mark Surtees | City of Ottawa |
| Jamal Syed | City of Cambridge |
| Gabor Szakter | Town of Markham |
