William K. Lietzau

William K. Lietzau
Official portrait, 2020
Director of the Defense Counterintelligence and Security Agency
In office
March 2020  October 2023
Deputy Assistant Secretary of Defense for Detainee Policy
In office
February 2010  August 2013
PresidentBarack Obama
SecretaryRobert Gates
Leon Panetta
Preceded byPhil Carter
Personal details
NationalityAmerican
EducationUnited States Naval Academy (BS)
Yale University (JD)
OccupationMilitary Officer, Attorney
Military service
Allegiance United States
Branch/service United States Marine Corps
Years of service1983-2010
Rank Colonel
UnitJudge Advocate General's Corps

William K. Lietzau is an American lawyer, former U.S. Marine Corps judge advocate, and former director of the Defense Counterintelligence and Security Agency.