John Mills (22 December 1754 – 8 July 1796) was an American military officer who served as acting Adjutant General and acting Inspector General of the U.S. Army from 1794 to 1796.

Mills was born on 22 December 1754, in Boston, Massachusetts.

He served in the U.S. Army, fighting in the American Revolutionary War and the Northwest Indian War.

He held the rank of major.

He died 8 July 1796, in Fort Greenville, Ohio.