Richard H. Cosgriff, Sr., (December 15, 1845 – November 2, 1910) was a Union Army soldier in the American Civil War and a recipient of the United States military's highest decoration, the Medal of Honor.

Enlisting in an Iowa cavalry regiment, he was awarded the Medal of Honor for capturing a Confederate battle flag during an engagement in the last month of the war.

[2] One week after the surrender of Confederate General Robert E. Lee at the Battle of Appomattox Court House, which ended all major engagements of the war, Cosgriff's unit moved towards Columbus, Georgia.

[2] On Easter Sunday, April 16, 1865, the 4th Iowa Cavalry and other regiments attacked a bridge over the Chattahoochee River which led into Columbus.

[2][3] When the Union general, James H. Wilson, called for cavalrymen to charge the covered bridge and capture the soldiers guarding it, Cosgriff volunteered.