Sylvian Lefebvre was named assistant coach on August 10, 2022.
Lefebvre helped guide the team to the 2023 Stanley Cup Final in his first season as assistant coach. He won his second Stanley Cup and first as a coach with Florida in 2024.
Prior to joining the Panthers, he spent three seasons with the San Diego Gulls of the American Hockey League (AHL) as an assistant coach.
A veteran of more than 14 years as an NHL and AHL coach, Lefebvre previously served as head coach of the Laval Rocket (2017-18), St. John's IceCaps (2015- 16 to 2016-17) and Hamilton Bulldogs (2012-13 to 2014-15), as well as assistant coach of the Colorado Avalanche (2009-10 to 2011-12) and Lake Erie Monsters (2007-08 to 2008-09).
Prior to his coaching career, Lefebvre appeared in 945 games as a defenseman with the New York Rangers (1999-00 to 2002-03), Colorado Avalanche (1995- 96 to 1998-99), Quebec Nordiques (1994-95), Toronto Maple Leafs (1992-93 to 1993-94) and Montreal Canadiens (1989-90 to 1991-92) recording 184 points (30-154-184). He won the 1995-96 Stanley Cup as a member of the Avalanche.
Following his North American playing career, he skated in one season (2003-04) with SC Bern of the Swiss National League A, helping the club to a league championship.