Mason Marchment (born June 18, 1995) is a Canadian professional ice hockey player who is a forward for the Columbus Blue Jackets of the National Hockey League (NHL).
During the 2019–20 season, on January 1, 2020, after losing several forwards to injury, the Maple Leafs called up Marchment to make his NHL debut the following night against the Winnipeg Jets. He registered one assist in four appearances with the Maple Leafs, across multiple callups before he was traded by Toronto to the Florida Panthers in exchange for Denis Malgin on February 19.
On November 3, 2020, Marchment as a restricted free agent was re-signed by the Panthers to a one-year, two-way contract. On April 5, 2021, he was signed to a one-year contract extension by the Panthers. On January 31, 2022, Marchment recorded a six-point (two goals and four assists) game, tying Olli Jokinen's franchise record for most points in a game, in the Panthers' 8–4 win over the Columbus Blue Jackets. On February 18, Marchment scored his first career hat-trick in a 6–2 win over the Minnesota Wild.
As a free agent from the Panthers, Marchment was signed to a four-year, $18 million contract with the Dallas Stars on July 13, 2022. In his first game with the Stars, Marchment recorded two goals to lead his team to a win over the Nashville Predators.
At the conclusion of the 2024–25 season, on June 19, 2025, the Stars traded Marchment to the Seattle Kraken in exchange for a 2025 fourth-round pick and a 2026 third-round pick.
On December 19, 2025, the Kraken traded Marchment to the Columbus Blue Jackets in exchange for 2026 fourth-round pick and a 2027 second-round pick.
| OJHL | 84 | 11 |
| OHL | 29 | 4 |
| OHL | 30 | — |
| OHL | 22 | 0 |
| AHL | 0 | — |
| AHL | 6 | — |
| ECHL | 27 | 11 |
| AHL | 36 | 18 |
| AHL | 60 | 22 |
| AHL | 28 | — |
| NHL | 0 | — |
| AHL | 8 | — |
| NHL | 18 | 8 |
| NHL | 53 | 6 |
| NHL | 80 | 18 |
| NHL | 54 | 10 |
| NHL | 53 | 18 |
| NHL | 26 | — |
| Calder Cup champion | 2018 |
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