Travelers can apply for a Hong Kong visa from the nearest Chinese
embassy or consulate. As an alternative, you may also submit your visa
application to the HKSAR Immigration Department either directly by post
or through a local sponsor.
To shorten the processing time, application forms and supporting
documents can be sent by fax in the first instance. However, the
original copy of the duly completed application form and the photographs
required should be sent immediately to the HKSAR Immigration Department
by air mail.
It is suggested that travelers contact and check with Chinese embassy or
consulate in your country, or with Immigration Department of the Hong
Kong SAR Government for the most updated information on entry
formalities:
https://www.immd.gov.hk/eng/services/visas/visit-transit/visit-visa-entry-permit.html