| Simmer | Anand | Hydro One | 2 |
| Colin | Andersen | Delphic Research | 99 |
| Lucas | Anderson | Humber Polytechnic | 93 |
| Colin | Anderson | Association of Power Producers of Ontario | 59 |
| Heather | Anderson | PPF | 66 |
| Jennifer | Angel | Evergreen | 81 |
| Sara | Angel | Art Canada Institute | 52 |
| David | Angus | Capital Hill Group | 26 |
| Michael | Anhorn | Canadian Mental Health Association Toronto | 82 |
| Rob | Annan | Genome Canada | 54 |
| Janet | Annesley | Kiwetinohk Energy | 36 |
| Jahanzaib | Ansari | Knockri | 8 |
| Christine | Aquino | Canada Foundation for Innovation | 28 |
| Devon | Aransevia | TELUS | 48 |
| Theo | Argitis | The Hub | 50 |
| Caitlin | Arizala | Ontario Legislature Internship Programme | 12 |
| Michelle | Arnold | Social Capital Partners | 50 |
| Anil | Arora | (not set) | Head Table |
| Bobby | Arora | (not set) | Head Table |
| Rikin | Arora | (not set) | 7 |
