James Blackwell (born 1 April 1995) is a New Zealand rugby union player who plays for the in the Super Rugby competition. His position of choice is lock.
Blackwell was born in Wellington. He was head boy at Wellington College in 2012 and also captained their First XV rugby team. He is a former New Zealand under-20 representative. He completed a commerce degree at Victoria University in Wellington.
Blackwell made his Super Rugby debut for the Hurricanes against the Sunwolves in 2017. In 2020, he re-signed with the Hurricanes until the end of 2023.