Eleazer Derby Wood (December 1783 – September 17, 1814) was an American Army officer in the War of 1812. Wood was born in Lunenburg, Massachusetts. He was admitted to United States Military Academy at West Point on May 17, 1805 and graduated on October 30, 1806. After graduation he served as assistant Engineer in the construction of the defenses at Governor's Island in New York harbor, 1807. In February 1808 he was promoted to First Lieutenant. He assisted in the construction of Castle Williams in New York Harbor and Fort Norfolk in Virginia.