| Name | Region |
|---|---|
| Zinandi Telecommunications | Gauteng |
| Zmail | Gauteng |
| Zomerlust Systems Design | Western Cape |
| ZoneOne | Western Cape |
| Zoopy.com | Western Cape |
| Zootzone | Western Cape |
| Zuka Consulting | Gauteng |
| Zulucom | KwaZulu-Natal |
| Zwana Unicom | Gauteng |
| Zytec Electronic Developments ZA | Eastern Cape |