The six-a-side tournament will take place at the Tin Kwong Road Recreation Ground in Kowloon, and the Bears’ trio will form part of a seven-man England squad.
The Hong Kong Sixes returned in 2024 after a seven-year hiatus and this year, the England squad will be led by John Simpson, who recently joined Nottinghamshire from Sussex.
Barnard (2024) and Mousley (2025) have both competed in the six-over competition previously, while Gilchrist will be making his debut.
England are one of 12 teams competing in the Hong Kong Sixes, alongside others including a home team from Hong Kong China, India, Australia, Pakistan and Sri Lanka, among others.
For more information, please visit the Hong Kong Sixes website.