Peter J. Ryan (1841 – January 8, 1908) was a Union Army soldier during the American Civil War.

[1] "The President of the United States of America, in the name of Congress, takes pleasure in presenting the Medal of Honor to Private Peter J. Ryan, United States Army, for extraordinary heroism on 19 September 1864, while serving with Company D, 11th Indiana Infantry, in action at Winchester, Virginia.

With one companion, Private Ryan captured 14 Confederates in the severest part of the battle."

Ryan was one of three soldiers of the 11th Indiana Infantry to receive the Medal of Honor for this action.

This article about a person of the American Civil War is a stub.