Leonidas Mahlon Godley (June 13, 1836 – May 23, 1904) was a Union Army soldier during the American Civil War.

Godley helped lead men of the 22nd towards the Redoubt, and succeeded with others in getting to the parapet of the earthworks, before he was severely wounded and captured.

Other soldiers of the 22nd later gained possession of a part of the outer works of the Redoubt, but were eventually forced out.

The President of the United States of America, in the name of Congress, takes pleasure in presenting the Medal of Honor to First Sergeant Leonidas Mahlon Godley, United States Army, for extraordinary heroism on 22 May 1863, while serving with Company E, 22d Iowa Infantry, in action at Vicksburg, Mississippi.

First Sergeant Godley led his company in the assault on the enemy's works and gained the parapet, there receiving three very severe wounds.