What does MARR stand for?

Manpower Authorization Requirement Review (SAUO)

Marine Accidents Requiring Rescue (OA)

Marlin Manufacturing - NCIC trailer make code

Maximum Annual Rate of Return - Finance

Minimum Attractive Rate of Return - Economics

Hay and Marriott's English Admiralty Reports - A publication (DLA)

Marrack's European Assurance Cases - England - A publication (DLA)

Marriage (DLA)