Heinie Conklin, born Charles John Conklin (July 15, 1889 - July 30, 1959) was an American actor of the silent film era, who appeared in nearly 400 films. Claimed to be one of the original Keystone Kops, Conklin's silent screen makeup consisted heavy eyebrow lining and a thinnish, upside-down, painted-on variation of Kaiser Wilhelm's moustache. He was born in San Francisco, California.

In areas where anti-German sentiments still ran high during the post-World War I era, Conklin was billed as Charlie Lynn. One of Conklin's first talking pictures was All Quiet on the Western Front as a hospital patient. For the rest of his career in talking pictures, he had small roles in 2-reelers which starred The Three Stooges, Andy Clyde, Hugh Herbert and Harry Langdon. Conklin's last billed movie was Abbott and Costello meet the Keystone Kops. He died in Hollywood, California.

Conklin's period at Keystone was contemporary with that of Chester Conklin, a more popular Keystone comedian who occasionally played lead roles in Keystone short films. The two Conklins were not related.

Father of Charles, Thelma and Clifford

Regular in Mack Sennett comedies.

Appeared in his own comic strip in the comic "Film Fun" (UK).