Matthew Kallio
| Personal information | |
|---|---|
| Born | September 26, 1986 Edmonton, Alberta, Canada |
| Nationality | Canadian |
Matthew Leigh "Matt" Kallio (Edmonton, 26 September 1986) is a Canadian NBA and FIBA referee, who has been a licensed FIBA official since 2012.
In 2021–22, he made his NBA debut as a non-staff referee and officiated 10 regular-season NBA games. He was promoted to full-time NBA officiating staff ahead of the 2022–23 season, becoming the first international official at the NBA level.