Lloyd Cook (born March 21, 1890 in Lynden, Ontario) was a professional ice hockey defenceman who played 4 games in the National Hockey League and 107 games in the Pacific Coast Hockey Association. He played for the Vancouver Millionaires, Vancouver Maroons, and Boston Bruins. He won the Stanley Cup in 1915 with the Vancouver Millionaires. He played for the Edmonton Dominions in the 1913-14 Alberta Senior Playoffs. In 1924 he was sold to the Boston Bruins of the National Hockey League (NHL) and played 4 games that season, scoring 1 goal, Lloyd Cook died in Taber, Alberta, in 1961.