Isaiah Johnston (born December 16, 2001) is a Canadian professional soccer player who plays as a midfielder for HFX Wanderers.

[9] At the 2019 CPL–U Sports Draft, Johnston was selected 10th overall by York9 FC (later renamed York United).

[28] In late June 2024, Johnston joined USL Championship club Loudoun United FC on a transfer, signing a two-year contract with options for 2026 and 2027.

[30] On January 15, 2025, Johnston was sold to Canadian Premier League side HFX Wanderers for an undisclosed fee, signing a two-year contract with an option for 2027.

[31] In 2016, he made his debut in the Canadian youth program at age 14 at an identification camp for the Canada U15 team.