Alvin Holsey (born 1965) is a United States Navy admiral, and a naval aviator, who has served as the commander of United States Southern Command since 7 November 2024. He served as military deputy commander of the United States Southern Command from 2023 to 2024. Holsey was commander of the Navy Personnel Command and Deputy Chief of Naval Personnel from 2021 to 2022. His command assignments also include leading Carrier Strike Group 1 from 2018 to 2020, and serving as commanding officer of the U.S. Navy's first hybrid electric propulsion warship, the USS Makin Island (LHD-8) from 2013 to 2014 after acting as its executive officer from February 2012.

A native of Fort Valley, Georgia, Holsey was commissioned through the Naval Reserve Officers Training Corps (NROTC) program at Morehouse College in 1988, where he received a bachelor's degree in Computer Science and joined Omega Psi Phi Fraternity Incorporated. In 1995, he earned a Master of Science in Management from Troy State University and attended the Joint Forces Staff College in 2010.

In September 2022, Holsey was nominated for promotion to vice admiral, and assignment as the military deputy commander of U.S. Southern Command. In July 2024, Holsey was nominated for promotion to admiral and assignment as the commander of United States Southern Command, a post that typically spans three years.

In October 2025, Secretary of Defense Pete Hegseth stated that Holsey was retiring at the end of the year. At the time, he was overseeing a Caribbean naval deployment that was the largest he had overseen in his career. Halsey offered to resign during a tense October meeting with Hegseth, in which he raised questions about the legality of the U.S. military strikes in the Caribbean.