Johanna "Hanny" Allston (born 12 February 1986) is an Australian orienteer.

She is the first Australian woman orienteer ever to win a gold medal at a World Championship level.

[1] When she won her gold medal it was her last year of eligibility to run in the Junior World Championships.

[1] This is the best result by an Australian in the history of the event and she became the first person to win both Senior and Junior World Orienteering Championship titles in the same year.

Hanny currently resides in Hobart, Tasmania where she runs a retail outlet in the CBD selling outdoor sports equipment and life coaching services.