Ken Daneyko is a former professional Canadian-American hockey defenceman who played his entire 20 year career with the New Jersey Devils in the NHL. Daneyko was drafted in the first round (18th overall) in the 1982 NHL Entry Draft, the second pick of the New Jersey Devils after the franchise relocated from Colorado; when he was drafted the organization had not yet chosen a new team name.

He spent several seasons in junior before getting drafted, and played for the Yorkton Terriers of the Saskatchewan Junior Hockey League, as well as the Great Falls Americans, Spokane Flyers and Seattle Breakers of the Western Hockey League. He was called up to the Devils for the start of the 1983–84 season. Upon his arrival in the NHL, Daneyko established himself as a stay-at-home defenceman, and soon won fans over with his gritty and self-sacrificing play. Daneyko won three Stanley Cup championships with the team. As of 2020, he holds the franchise record for games played as a Devil with 1,283 games.

The Devils retired his uniform number, 3, in 2006. Daneyko now provides colour analysis alongside Steve Cangialosi during broadcasts of Devils games on MSG Plus, as of 2021.