Gray Line Tours of Hong Kong Limited have been operating since 1959 under the renowned brand name “Gray Line” 
franchised from Gray Line Corporation, Colorado, U.S.A. Today, we have a total of 180 experienced staffs with a fleet of about 30 tourist coaches and limousines providing travel service in Hong Kong and Macau.
| Head Office | Address: 5/F, Cheong Hing Building, 72 Nathan Road, Tsimshatsui, Kowloon, Hong Kong | |
| Hotline: (852) 2368 7111 (Hours: 07:00 - 20:00) | Email: sales@grayline.com.hk | |
| Operation Department | Telephone: (852) 2368 7111 | Email: tourdepartment@grayline.com.hk | Fax: (852) 2721 9651 |
| Account Department | Telephone: (852) 2368 7112 | Email: account@grayline.com.hk | Fax: (852) 2721 9155 |
| Sales Department | Telephone: (852) 2368 7113 | Email: sales@grayline.com.hk | Fax: (852) 2721 9651 |
| Reservation Department | Telephone: (852) 2368 7114 | Email: reservation@grayline.com.hk | Fax: (852) 2723 8528 |
| Inbound Department | Telephone: (852) 2581 1511 | Email: inbound@grayline.com.hk | Fax: (852) 2850 5944 |
