Markt- en opinieonderzoekbureaus Zaventem (postcode: 1930)
| naam | straat | gemeente | kbo-nummer |
| ASSOCIATION OF COMMUNICATION COMPANIES | Minervastraat,4 | Zaventem | 0451546876 |
| BELLIDIC | Excelsiorlaan,91 | Zaventem | 0429489175 |
| BRIAR | Hermesstraat,7 | Zaventem | 0471372389 |
| Deloitte Belgium | Luchthaven Brussel Nationaal,1 J | Zaventem | 0431366126 |
| EFQM | Luchthaven Brussel Nationaal,1K | Zaventem | 0871740087 |
| EURO-FITTING MANAGEMENT | Belgicastraat,11 | Zaventem | 0464360675 |
| European Airport Coordinators Association | Luchthaven Brussel Nationaal,0 | Zaventem | 0896125788 |
| IQVIA Solutions Belgium | Da Vincilaan,7 | Zaventem | 0400502211 |
| IQVIA Solutions Belgium | Da Vincilaan,7 | Zaventem | 0400502211 |
| KEY MANAGEMENT SERVICES | Leuvensesteenweg,677 | Zaventem | 0441490748 |
| LAW4BUSINESS | Vilvoordelaan,192 | Zaventem | 0441074737 |
| MARKETING en ENTERTAINMENT | Excelsiorlaan,75-77 | Zaventem | 0459390317 |
| MEDIASCOOP | Da Vincilaan,1 | Zaventem | 0450627653 |
| MICROSOFT | Luchthaven Brussel Nationaal,1K | Zaventem | 0437910359 |
| PUBLIC AFFAIRS CONSULTANTS | Leuvensesteenweg,510 | Zaventem | 0439156414 |
| WILLIS TOWERS WATSON CONSULTING | Da Vincilaan,5 | Zaventem | 0428591926 |
| XELEOS | Da Vincilaan,1 | Zaventem | 0462080878 |