Donald Gallaher (June 25, 1895 – August 14, 1961) was an American actor who appeared in 25 films between 1903 and 1949. He also directed five films, including Temple Tower (1930). His name is sometimes misspelled "Gallagher".
Gallaher was born in Quincy, Illinois. After moving to New York City as a child with his mother, he began acting in productions such as A Royal Family. He had 10 roles in plays before he reached age 12.
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Zudora
1914

The Great Train Robbery
1903 · as Little Boy (uncredited)

Keeper of the Flame
1943

Road to Utopia
1946 · as Man at Zambini's (uncredited)

Collegiate
1936 · as Thomas J. Bloodgood

Never Say Die
1939 · as Manager

Draft 258
1917

The Man in Half Moon Street
1945 · as Ticket Agent

The Magnificent Fraud
1939 · as Dr. Diaz

Six-Gun Trail
1938 · as Henchman Tracy

Code of the Fearless
1939 · as Ranger Pete Howard

Outlaws' Paradise
1939 · as Henchman Mort

Thru Different Eyes
1929 · as Spencer

The Million Dollar Mystery
1914

Straight Shooter
1939 · as Saloon Gunman (archive footage)

Eye for Eye
1918 · as Ensign Arnauld

The Silent Master
1917 · as Eugene Arlen

Friendship
1929 · as The Young Actor