Officer Designate (OF(D)) is a term used in the NATO rank scale, and comes below OF-1.

Ranks designated as OF(D) include:

• Midshipman in the British Royal Navy.
• Oberfähnrich in the German Bundeswehr (army) and Luftwaffe (air force).
• Oberfähnrich zur See in the German Deutsche Marine (navy)
• Aspirante-a-oficial in the Portuguese armed forces. This is the first rank in the officer corps, coming below Alferes in the army and air force and Guarda-Marinha (Naval School graduates) or Sub-tenente (temporary officers graduated from civilian universities) in the navy.

Officer Designate does not have an equivalent in the British Army, Royal Air Force or United States Armed Forces.

See also

• Comparative military ranks
• Subordinate Officer