Esteban Gallard (January 1, 1901 – October 7, 1929) was a Cuban boxer who found international fame under the nickname Kid Charol.

While Charol never won a world boxing title, he did obtain popularity, especially in Argentina where he lived for the last years of his life after moving there from his Cuban hometown of Sagua la Grande.

Charol won three and drew one of his next four bouts, and then, on February 16, 1924, he was defeated for the first time, losing to Jimmy Finley by a fifteen-round decision in Havana.

On his next fight, March 15 of the same year, Charol won the Cuban Middleweight title, when he knocked Rafael Fello Rodriguez in the fifth round of a rematch.

On March 1, Kid Charol supposedly knocked out Alex Rely, also in Lima, in another fight whose exact date is not known.

It was during this time that his popularity among Argentine boxing fans rose even more, because, despite the fact that the public was aware of his illness, he fought on, winning three more bouts.

He managed, however, to keep training, and secured a fight with future International Boxing Hall of Fame member Dave Shade, who traveled to Argentina for the bout.

This would turn out to be Charol's last fight, as his condition kept on worsening until he died five and a half months later, on October 7, in Buenos Aires.