Matthew Kayser
Nima Mohammadi is a dedicated and accomplished professional basketball referee whose journey spans from local leagues in Ontario, Canada, to officiating professional-level games across North America. His career reflects a steady progression built on ability, commitment, and a deep respect for the game. Transitioning from a player to a referee gives him a unique perspective on the court, and his accomplishments highlight his dedication to officiating at the highest standard.
Personal Journey and Growth
Mohammadi began refereeing in 2011 after moving from player to official. He got a running start, earning the Rookie Official of the Year award while also working provincial finals and various playoff games in Ontario. That early success reinforced his decision to pursue refereeing as a professional path.
A devout student of the game, Mohammadi progressed from youth games to professional-level competitions with mentorship, persistence, and a passion for mastering the craft of officiating. His professional growth led him to officiate in major leagues, including the Athletes Unlimited (Women’s Pro League), The Basketball League, and the Basketball Super League. His expertise has earned him appointments to high-profile games, including the 2023 Del Var Pro-Am Championship and Game 1 of the 2025 BSL Finals.
Mentorship and Education
Throughout his career, Mohammadi has learned from experienced professionals, particularly NBA-level mentors such as Eric Lewis and JB Caldwell, during a 2018 Florida training camp. He has integrated these lessons and now applies professional standards learned from elite camps to every level at which he officiates.
Mohammadi readily admits that officiating mirrors his personal life in many ways. Officiating has taught him patience, discipline, and accountability, skills he carries beyond the court.
Thought Leadership
Mohammadi leads officiating crews as Crew Chief, providing pre-game preparation and guidance to his crew. This role has brought recognition for his emotional intelligence in managing players, coaches, and high-stakes moments. His approach emphasizes respect, communication, and professionalism in game management, and he leads by example.
His professionalism and consistency have made him a trusted official for top-tier competitions.
Resilience
Mohammadi’s resilience comes from overcoming challenges. Being on both sides of the court has ingrained a love and respect for the game, as a player and as an official. His mentors helped him overcome self-doubt and develop a performance-based mindset, both of which are critical aspects for a long and rewarding career.
Key lessons from his mentorship experience include understanding the value of emotional resilience in a high-pressure career. These lessons have taught him how to be a leader, overcome rejections, and operate at a consistently professional level.
The Future
Mohammadi aims to further serve the game of basketball at the highest levels, including the NCAA, NBA, and international professional leagues. He aspires to represent excellence and leadership as a foreign-born official in the United States.
Nima Mohammadi’s personal and professional journeys often overlap, reflecting his commitment to growth and leadership. Guided by mentors and shaped by experience, his path exemplifies how hard work and an open mind can lead to a lasting career in officiating.