Dionel Michael Aviles (born January 23, 1961)[1] was the United States Under Secretary of the Navy from October 8, 2004, to May 19, 2009, part of which he served as the acting United States Secretary of the Navy.

A native of Bryan, Texas, Dionel M. Aviles graduated from the United States Naval Academy with a Bachelor of Science degree in mechanical engineering in 1983.

He subsequently spent 1983 through 1988 as a surface warfare officer in the United States Navy.

He then joined the Naval Air Systems Command, where he worked on developing the BGM-109 Tomahawk as part of the Naval Air Systems Command's Cruise Missile Project.

In 2001, President George W. Bush nominated Aviles as Assistant Secretary of the Navy (Financial Management), and Aviles served in this capacity from July 2001 until October 2004.