| Business | Phone |
| Advanced Imaging Research 1262 E 49th St # 400, Cleveland 44114 | (216) 426-1461 |
| American Market Research 11615 Pleasant Ridge Pl, Cleveland 44136 | (440) 238-2137 |
| Bioflexis 11000 Cedar Ave # 260, Cleveland 44106 | (216) 721-0671 |
| Business Research Svc Inc 26600 Renaissance Pkwy, Cleveland 44128 | (216) 831-5200 |
| Cleveland Center For Info 3746 Prospect Ave E, Cleveland 44115 | (216) 391-2248 |
| Wackenhut National Research 20325 Center Ridge Rd, Cleveland 44116 | (440) 356-4275 |
| Consolidated Research 5 Severance Cir, Cleveland 44118 | (216) 382-1865 |
| F & C Research 5311 Northfield Rd, Cleveland 44146 | (216) 587-1322 |
| Shen Research Organization 2605 Wellington Rd, Cleveland 44118 | (216) 371-4410 |
| Renaissance Research Svc 1165 E Dartmoor Ave, Cleveland 44131 | (216) 524-3601 |
| Housing Research & Advocacy 3631 Perkins Ave, Cleveland 44114 | (216) 361-9240 |
| Icon Interventional 1414 S Green Rd # 309, Cleveland 44121 | (216) 691-3764 |
| Philliber Research Assoc 13411 Union Ave, Cleveland 44120 | (216) 295-9309 |
| Office Of Research Specialist 9909 Garfield Ave, Cleveland 44108 | (216) 851-7348 |
| Negro Market Research 2408 Cedar Ave, Cleveland 44115 | (216) 621-7711 |
| Newkirk Research Assoc 5658 S Greenway Ct # B, Cleveland 44143 | (440) 473-0569 |
| Longbow Research 6000 Lombardo Ctr, Cleveland 44131 | (216) 986-0700 |
| Nasa John H Glen Research Center 21000 Brookpark Rd, Cleveland 44135 | (216) 433-2001 |