Oscar Brookin (or Brookins) (19 July 1869 in Byron, Wisconsin – 18 August 1938) served in the United States Army during the Spanish–American War.
He received the Medal of Honor for his actions during the Battle of El Caney.Brookin joined the army from Milwaukee, Wisconsin in January 1893, and served until being discharged in March 1899.
He died in 1938 and is buried in Sunset Cemetery in Galloway, Ohio.