John Beard Allen (May 18, 1845 – January 28, 1903) was an American lawyer and politician who served as a United States senator from Washington from 1889 to 1893.

A member of the Republican Party, he previously served as the United States representative from Washington Territory's at-large congressional district in 1889.

[1] He served as a private in the Union Army with the 135th Indiana Volunteers during the American Civil War.

[2] After departing from public office, Allen pursued a career in private law practice in Seattle, Washington, where he eventually succumbed to cardiovascular disease in 1903.

Subsequently, in 1917, the District unveiled a second brick building, leading to an increase in enrollment, which reached its peak at 758 students in 1933.