- Sexual Drive, Requiem for a Dream and Pieta has been classified as Category III.
- The duration of Barbarian Invasion is 106 minutes, not 105 minutes.
- The duration of Crocodile is 100 minutes, not 102 minutes.
- Annette has been classified as Category III.
Completed forms with ticket(s) should be returned by post to the Hong Kong International Film Festival Society Limited (8/F, The Rays, 71 Hung To Road, Kwun Tong, Kowloon, Hong Kong) on or before 30 September 2021. Refund cheques will be sent to ticket holders by post. (All services fees will not be refunded).