Moira Dempsey Modzelewski (born 30 May 1958)[2][3] is an American lawyer and former captain in the United States Navy.

[7] Modzelewski is notable for her appointment to serve as the Presiding Officer over Noor Uthman Muhammaed's Guantanamo military commission.

[5] In April 2010 she predicted she would require a year to review the secret evidence against Noor Uthman Muhammaed.

Modzelewski joined the Navy-Marine Corps Court of Criminal Appeals in 2011 and became its Chief Judge on 6 August 2013.

[10] Retiring from active duty in on 12 July 2018,[6] she was succeeded as Chief Judge of the Navy by Charles N. Purnell II.