John R. Clarke (scientist)

John R. Clarke
Born (1945-11-20) November 20, 1945
Fort Smith, Arkansas, U.S.
Allegiance United States of America
BranchUnited States Army Reserve
Years of service11
RankCaptain
Other workUnited States Navy Experimental Diving Unit, University of Wollongong

John R. Clarke (born November 20, 1945) is an American scientist, private pilot and author. He is currently the Scientific Director at the United States Navy Experimental Diving Unit (NEDU). Clarke is recognized as a leading authority on underwater breathing apparatus engineering.