Lias Andersson (born 13 October 1998) is a Swedish professional ice hockey forward for the Ontario Reign in the American Hockey League (AHL) while under contract to the Los Angeles Kings of the National Hockey League (NHL). He was selected by the New York Rangers, seventh overall, in the 2017 NHL Entry Draft. Andersson's father Niklas played 763 SHL games and 165 NHL games, and his uncle Mikael played 761 NHL games.
On 2 July 2023, Andersson as a free agent signed a one-year, two-way contract with the Montreal Canadiens. Andersson attended the Canadiens 2023 training camp but was placed on waivers with the intent on assigning him to Montreal's AHL affiliate, the Laval Rocket. After going unclaimed, Andersson was assigned to Laval to start the 2023–24 season.
In June 2024, Andersson left the Canadiens organization and signed a two-year contract with EHC Biel-Bienne of the Switzerland-based National League (NL).