| Wing On CPA & Associates Limited | Private company limited by shares | Live |
| WINJO & ASSOCIATES LIMITED | Private company limited by shares | Dissolved |
| WINPROJECTS ASSOCIATES COMPANY LIMITED | Private company limited by shares | Dissolved |
| WINROX ASSOCIATES LIMITED | Private company limited by shares | Live |
| WINTRADE & ASSOCIATES LIMITED | Private company limited by shares | Dissolved |
| WISER ASSOCIATES LIMITED | Private company limited by shares | Live |
| WOMCO ASSOCIATES LIMITED | Private company limited by shares | Dissolved |
| ANDY WONG & ASSOCIATES LIMITED | Private company limited by shares | Dissolved |
| WONG, CHAN & ASSOCIATES LIMITED | Private company limited by shares | Dissolved |
| CHAN & WONG ASSOCIATES LIMITED | Private company limited by shares | Live |
| CHARLES M.H. WONG ARCHITECT & ASSOCIATES LIMITED | Private company limited by shares | Live |
| H.F. WONG AND ASSOCIATES LIMITED | Private company limited by shares | Dissolved |
| PETER WONG DESIGN & ASSOCIATES LIMITED | Private company limited by shares | Dissolved |
| WONG'S OVERSEA ASSOCIATES COMPANY LIMITED | Private company limited by shares | Dissolved |
| WOODTREE ASSOCIATES LIMITED | Private company limited by shares | Live |
| CORREA WORRALL AND ASSOCIATES LIMITED | Private company limited by shares | Live |
| WORTH ASSOCIATES LIMITED | Private company limited by shares | Dissolved |
| W.S. LAU & ASSOCIATES LIMITED | Private company limited by shares | Live |
| X-IT Associates Limited | Private company limited by shares | Live |
| YARROW ASSOCIATES LIMITED | Private company limited by shares | Dissolved |
| YASKAWA ASSOCIATES LIMITED | Private company limited by shares | Dissolved |
| OMAR YEUNG ARCHITECT AND ASSOCIATES LIMITED | Private company limited by shares | Live |
| TSANG YEUNG & ASSOCIATES LIMITED | Private company limited by shares | Live |
| YORK AND ASSOCIATES LIMITED | Private company limited by shares | Dissolved |
| YORKLAN ASSOCIATES LIMITED | Private company limited by shares | Live |
| YORKMAX & ASSOCIATES LIMITED | Private company limited by shares | Live |
| YOUNG ASSOCIATES LIMITED | Private company limited by shares | Live |
| YOUNG & ASSOCIATES LIMITED | Private company limited by shares | Dissolved |
| YUEN AND ASSOCIATES, LIMITED | Private company limited by shares | Dissolved |
| C. YUEN & ASSOCIATES LIMITED | Private company limited by shares | Dissolved |
| Wui Yuen Associates Limited | Private company limited by shares | Dissolved |
| Dr. Yung Yan Kai & Associates Limited | Private company limited by shares | Live |
| YVONNE SIU AND ASSOCIATES LIMITED | Private company limited by shares | Dissolved |
| YVONNE YIP & ASSOCIATES LIMITED | Private company limited by shares | Live |
| ZEBRA ASSOCIATES LIMITED | Private company limited by shares | Dissolved |
| ZECHA ASSOCIATES LIMITED | Private company limited by shares | Dissolved |
| REEVE ZECHA & ASSOCIATES LIMITED | Private company limited by shares | Dissolved |
| ZEPPELIN ASSOCIATES LIMITED | Private company limited by shares | Live |
| MICHAEL ZHENG & ASSOCIATES LIMITED | Private company limited by shares | Live |
| Michael Zheng & Associates Pty Limited | Private company limited by shares | Live |
| CHA AND ZHUGE ASSOCIATES LIMITED | Private company limited by shares | Live |
| ZOOM & SIZES AND ASSOCIATES LIMITED | Private company limited by shares | Dissolved |
| ZOOM & SIZES AND ASSOCIATES LIMITED | Private company limited by shares | Live |
| N Zurstrassen & Associates Limited | Private company limited by shares | Live |
| PIRIE AND ASSOCIATES-DESIGNERS LIMITED | Private company limited by shares | Dissolved |