F45

F45 may refer to:

Ships

• Brazilian frigate União (F-45), a Niterói-class frigate of the Brazilian Navy
• HMS Hector (F45), an armed merchant cruiser of the Royal Navy
• HMS Khartoum (F45), a K-class frigate of the Royal Navy
• HMS Minerva (F45), a Leander-class frigate of the Royal Navy
• INS Teg (F45), a Talwar-class frigate of the Indian Navy

Aircraft and Airports

• Firecatcher F-45, a single-turboprop aircraft designed for aerial firefighting, air freight and commuter airlines.
• Fairchild 45, a rare American 1930s vintage aircraft
• North Palm Beach County General Aviation Airport, in Florida (location identifier: F45)

Other uses

• BMW 2 Series (F45), an automobile
• EMD F45, an American diesel-electric locomotive
• F45 Training, an Australian multinational chain of fitness clubs
• Somatic symptom disorder (medical classification code: F45)