Rear Admiral Ridley McLean, USN (10 November 1872 – 12 November 1933) was a two-star Admiral in the United States Navy.
He was a Naval Academy graduate, the original author of the Navy's Bluejacket's Manual, and Judge Advocate General (JAG).
He was a battleship commander in World War I, a pioneer in naval use of shortwave communication, a submarine force and a Battleship division commander.