Oscar Frederick Nelson (November 5, 1881 – September 26, 1951) was a machinist's mate first class serving in the United States Navy who received the Medal of Honor for bravery.
Nelson was born November 5, 1881, in Minneapolis, Minnesota and after joining the navy was stationed aboard the USS Bennington (PG-4) as a machinist's mate first class.
On July 21, 1905, the USS Bennington was in San Diego, California when a boiler exploded.
He died September 26, 1951, and is buried in Fort Snelling National Cemetery in Minneapolis, Minnesota.
Bennington, for extraordinary heroism displayed at the time of the explosion of a boiler of that vessel at San Diego, Calif., 21 July 1905.