Kellan Lain (born August 11, 1989) is a Canadian former professional ice hockey forward who most recently played for the Idaho Steelheads of the ECHL.

Lain set an NHL record for the fastest fight and fastest game misconduct to start a career at 2 seconds, during a brawl off the opening faceoff, surpassing the previous record of 12 seconds set by John Ferguson of the Montreal Canadiens in a fight with Ted Green of the Boston Bruins on October 8, 1963.

[15] Lain agreed to a one-year contract with the Quad City Mallards of the ECHL and was immediately signed to a try-out with AHL affiliate, the Iowa Wild on October 25, 2015.

[17] As a free agent over the summer, Lain was unable to attain an NHL or AHL contract, opting to sign a one-year deal with ECHL outfit, the Idaho Steelheads, on September 20, 2016.

[18] He retired from professional hockey after the conclusion of the 2017 season, though he played for the Stoney Creek Generals in 2018–2019, capturing the Allan Cup.