Ivan L. Slavich Jr. (September 9, 1927 – October 20, 2012) was a United States Army colonel who helped pioneer the use of the HU-1A "Huey" helicopter as a tactical close-in support assault ship, and commanded the first armed combat helicopter unit in American military history. He served in World War II, the Korean War, and the Vietnam War; his military service also included an early enlistment in the U.S. Marine Corps. Slavich served from 1951 to 1975 as a U.S. Army officer. He served from 1945 to 1947 as an enlisted U.S. Marine.