Michael Phillip "Rifle" DeLong (March 15, 1945 – July 27, 2018) was a United States Marine Corps lieutenant general who served as deputy commander, United States Central Command, MacDill Air Force Base, Florida.

From 2000 until his retirement in 2003 (with over 36 years of service), DeLong was second-in-command to General Tommy Franks, who, as commander of United States Central Command, was in charge of the war on terror, including Operation Iraqi Freedom in Iraq and Operation Enduring Freedom in Afghanistan.

[1] DeLong was a graduate of the United States Naval Academy and held a master's degree in industrial management from Central Michigan University.

[2] His principal staff assignments include officer-in-charge, Fleet Marine Force, Pacific Command Center; Intelligence Requirements Officer, Fleet Marine Force, Pacific; aide-de-camp to the deputy commander, Fleet Marine Force, Pacific; arms control/strategic weapons action officer in the Strategic Requirements Branch of the Plans Division, Headquarters Marine Corps; and the director for joint training (J-7) and director of Joint Training Analyses and Simulation Center, U.S. Atlantic Command.

[2] DeLong died of a heart attack in Treasure Island, Florida on July 27, 2018, at the age of 73.