F45 may refer to:

Ships

* , a Niterói-class frigate of the Brazilian Navy * , an armed merchant cruiser of the Royal Navy * , a K-class frigate of the Royal Navy * , a ''Leander''-class frigate of the Royal Navy * , 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 Somatic symptom disorder, also known as somatoform disorder or somatization disorder, is chronic somatization. One or more chronic physical symptoms coincide with excessive and maladaptive thoughts, emotions, and behaviors connected to those symp ...

(medical classification code: F45) {{Letter-NumberCombDisambig