| Business | Phone |
| A D Gagnon Assoc 116 Albert St, Ottawa K1P 5G3 | (613) 235-8677 |
| Adjeleian Allen Rubeli Ltd 75 Albert St #1005, Ottawa K1P 5E7 | (613) 232-5786 |
| Aepos Technologies Corp 116 Albert St #600, Ottawa K1P 5G3 | (613) 237-3022 |
| Airwater Engineering Inc 197 Wingate Dr, Ottawa K1G 1S4 | (613) 523-6079 |
| Golder Associates 1796 Courtwood Cres, Ottawa K2C 2B5 | (613) 224-5864 |
| Goodkey Weedmark & Assoc Ltd 1749 Woodward Dr, Ottawa K2C 0P9 | (613) 727-5111 |
| Grand Canada Engineering Ltd 130 Albert St, Ottawa K1P 5G4 | (613) 230-7007 |
| Halsall Associates Ltd 210 Gladstone Ave #300, Ottawa K2P 0Y6 | (613) 237-2462 |
| Hisc Limited 107 Sparks St #301, Ottawa K1P 5B5 | (613) 235-0220 |
| Intelligent Engineering Ltd 72 Chamberlain Ave #200, Ottawa K1S 1V9 | (613) 569-3111 |
| J F Sabourin & Assoc Inc 1111 Prince Of Wales Dr #401, Ottawa K2C 3T2 | (613) 727-5199 |
| J L Richards & Assoc Ltd 864 Lady Ellen Pl, Ottawa K1Z 5M2 | (613) 728-3571 |
| Jacques Whitford Ltd 2781 Lancaster Rd #200, Ottawa K1B 1A7 | (613) 738-0708 |
| John G Cooke & Assoc Ltd 1750 Courtwood Cres #101, Ottawa K2C 2B5 | (613) 226-8718 |
| Keen Engineering Co Ltd 1111 Prince Of Wales Dr #402, Ottawa K2C 3T2 | (613) 225-8414 |
| Keller Engineering Assoc Inc 1390 Prince Of Wales Dr #107, Ottawa K2C 3N6 | (613) 224-1594 |
| Lci Engineering Inc 2525 St Laurent Blvd #102, Ottawa K1H 8P5 | (613) 737-7745 |
| Lecompte Engineering Ltd 251 Bank St #301, Ottawa K2P 1X3 | (613) 236-6662 |
| Maratime Technologies Inc 223 Macdougall, Ottawa | (613) 445-1431 |
| Mc Cormick Rankin Corp 1145 Hunt Club Rd #204, Ottawa K1V 0Y3 | (613) 736-7200 |
| Ottawa Engineering Ltd 2747 Priscilla St, Ottawa K2B 7E1 | (613) 820-8234 |
| Promaxis Systems Inc 2385 St Laurent Blvd, Ottawa K1G 6C3 | (613) 737-2112 |
| Quadrant Engineering Ltd 107 Pretoria Ave, Ottawa K1S 1W8 | (613) 567-1487 |
| Qualprotech Ottawa Inc 2285 St Laurent Blvd #D1, Ottawa K1G 4Z7 | (613) 521-3692 |
| R J Mc Kee Electrical Ltd 1785 Woodward Dr, Ottawa K2C 0P9 | (613) 723-9750 |
| Risklogic Scientific Svc 14 Clarendon Ave, Ottawa K1Y 0P2 | (613) 729-8536 |
| Bekolay Gillard & Assoc 1827 Woodward Dr, Ottawa K2C 0P9 | (613) 723-0474 |
| Biokinetics & Assoc Ltd 2470 Don Reid Dr, Ottawa K1H 1E1 | (613) 736-0384 |
| Ross Thermal 1168 Blasdell Ave, Ottawa K1K 4H5 | (613) 741-9038 |
| Sauve Boucher Assoc Inc 325 Dalhousie St #510, Ottawa K1N 7G2 | (613) 241-1119 |
| Simmering & Assoc Ltd 1750 Courtwood Cres #300, Ottawa K2C 2B5 | (613) 224-0224 |
| Smith & Andersen Consulting 738a Bank St #205, Ottawa K1S 3V4 | (613) 230-1186 |
| Stantec Consulting 1505 Laperriere Ave #400, Ottawa K1Z 7T1 | (613) 722-4420 |
| Uniat Design Management Ltd 378c Richmond Rd, Ottawa K2A 0E8 | (613) 820-5467 |
| W F Baird & Assoc Coastal Eng 1145 Hunt Club Rd #204, Ottawa K1V 0Y3 | (613) 731-8900 |
| Walsh Automation Inc 2117 Knightsbridge Rd, Ottawa K2A 0R1 | (613) 728-7755 |
| Caba Inc 502 Main St #10, Ottawa K1S 1M9 | (613) 731-6485 |
| Winstar Group Inc 1743 St Laurent Blvd #222, Ottawa K1G 3V4 | (613) 739-1230 |
| Xogenus 70 George St, Ottawa K1N 5V9 | (613) 241-5862 |
| Zenix Engineering Ltd 356 Kirkwood Ave #100, Ottawa K1Z 8P1 | (613) 729-2818 |
| Ece Group Ltd 240 Catherine St, Ottawa K2P 2G8 | (613) 236-8508 |
| Brytech Inc 600 Peter Morand Cres #240, Ottawa K1G 5Z3 | (613) 731-5800 |
| Burnside Environmental Ltd 1272 Wellington St #300, Ottawa K1Y 3A7 | (613) 563-0378 |
| Castle Glenn Consultants Inc 690 Coronation Ave, Ottawa K1G 0M6 | (613) 731-4052 |
| Ch2m Hill Canada Ltd 1101 Prince Of Wales Dr #330, Ottawa K2C 3W7 | (613) 723-8700 |
| Cowater International Inc 411 Roosevelt Ave #400, Ottawa K2A 3X9 | (613) 722-6434 |
| Cristomar-Leung Engineering 1805 Woodward Dr, Ottawa K2C 0P9 | (613) 723-8627 |
| Csa Building Sciences Ltd 1559 Laperriere Ave, Ottawa K1Z 7T1 | (613) 728-3664 |
| Cumming Cockburn Ltd 1770 Woodward Dr, Ottawa K2C 0P8 | (613) 225-1311 |
| Cunliffe & Assoc 79 Hinton Ave N, Ottawa K1Y 0Z7 | (613) 729-7242 |
| D M Wills Ltd 160 Maclaren St, Ottawa K2P 0K9 | (613) 231-5222 |
| Daley Ferraro Assoc Engrng 2720 Queensview Dr #1157, Ottawa K2B 1A5 | (613) 726-2939 |
| Davis Engineering Ltd 1260 Old Innes Rd, Ottawa K1B 3V3 | (613) 748-5500 |
| Erl Consulting 1376 Bank St, Ottawa K1H 8N6 | (613) 247-0213 |
| Fleetway Inc 141 Laurier Ave W #800, Ottawa K1P 5J3 | (613) 236-6048 |
| G-Tel 2825 Sheffield Rd, Ottawa K1B 3V8 | (613) 749-7834 |