James Lloyd Klein (January 13, 1910 in Saskatoon, Saskatchewan – December 9, 1966) was a Canadian professional ice hockey left winger.

He played in the National Hockey League with the Boston Bruins and New York Americans between 1928 and 1937.

The rest of his career, which lasted from 1927 to 1948, was mainly spent in the American Hockey League.

He played 164 games in the NHL with 30 goals, 24 assists, 54 points, and 68 penalties in the regular season.

This biographical article relating to a Canadian ice hockey winger born in the 1910s is a stub.