Sir Donald Henry Trescowthick, AC, KBE (4 December 1930 – 13 August 2024) was an Australian businessman.
Trescowthick acquired Charles Davis Limited, a major Tasmanian company which had been established in 1847.
The company was renamed Harris Scarfe Holdings Limited in 1995.
In addition to his involvement in Charles Davis Limited, Trescowthick was involved in several private ventures, including ownership of the Place Arcade in Toorak Village shopping centre in Melbourne Australia.
Trescowthick was involved in community, sporting and charitable activities during his business career.