Louis Virgil Hamman (December 21, 1877 – April 28, 1946) was an American physician who was recognized as one of the great clinicians in his time.

[1] Louis Virgil Hamman was born on December 21, 1877, in Baltimore, Maryland, to Agatha (née Haseneyer) and John A.

[citation needed] He said: "The physician, consciously or otherwise, depends for success in his practice on his abilities as a psychiatrist.

"[citation needed] Hamman was assistant visiting physician at Johns Hopkins Hospital from 1908 to 1928.

[3] He was a member of Phi Beta Kappa and served as corresponding secretary of the International Anti-Tuberculosis Society.