Piers von Dadelszen (born March 25, 2000) is a Canadian professional rugby union player.
Born in Vancouver, British Columbia, von Dadelszen was a Canada under-age representative, educated in England at Whitgift School.
He continued his studies at the University of Oxford and gained three blues while playing for Oxford University RFC, as a back-rower and lock.
After completing his master's degree in engineering, von Dadelszen was signed by Major League Rugby team New England Free Jacks for the 2024 season.
[1][2] In 2022, von Dadelszen was capped for Canada in matches against Spain and Namibia.