Jack "Kid" Lester (2 May 1891 – 1916) was an American heavyweight boxer.

He was born in Calumet, Michigan as Jack Jubeck on May 2, 1891 to Polish parents.

Tommy Burns sent Lester to Australia in 1911 to gain fight experience, and in September that year he beat Bill Lang, the Australian heavyweight champion, by points.

Towards the end of his career he lost two matches to Light Heavyweight champion Jack Dillon.

This biographical article related to an American boxer is a stub.