Paul, 44, worked as an assistant to Canada coach Kingsley Jones while he was in charge of Russia. Most recently Paul was the director of rugby at JA Dragons RFC in the United Arab Emirates.
Paul represented New Zealand in rugby league and England in rugby union in fifteens and sevens.
“While Henry will initially be helping our men’s team prepare to qualify for the (2019 rugby World Cup)in November, he will also be working across the country with regional and provincial coaches on defensive structures for the game in Canada,” Dustin Hopkins, Rugby Canada’s interim general manager of rugby operations and performance, said in a statement.
Wales’ Gethin Watts is also joining Rugby Canada on a short-term contract, as a consultant to its age-grade and talent identification departments,
Watts spent the last six years as national performance manager for the Welsh Rugby Union.