F9, F09, F.IX, F 9 or F-9 may refer to:

Transport and vehicles

EMD F9 The EMD F9 is a Diesel-electric locomotive produced between February 1953 and May 1960 by the Electro-Motive Division of General Motors (EMD) and General Motors Diesel (GMD). It succeeded the F7 model in GM-EMD's F-unit sequence. Final asse ...

, a locomotive in the 1950s * F-9 Flying Fortress, a variant of the B-17 Flying Fortress *

F9C Sparrowhawk The Curtiss F9C Sparrowhawk is a light 1930s biplane fighter aircraft that was carried by the United States Navy airships and . It is an example of a parasite fighter, a small airplane designed to be deployed from a larger aircraft such as an ...

, a biplane parasite fighter from the 1930s *

Falcon 9 Falcon 9 is a Reusable launch system#Partial reusable launch systems, partially reusable, two-stage-to-orbit, medium-lift launch vehicle designed and manufactured in the United States by SpaceX. The first Falcon 9 launch was on June 4, 2010, an ...

, a rocket of SpaceX * Falconar F9A, a Canadian homebuilt aircraft design * Farrier F-9, a New Zealand trimaran sailboat * Fokker F.IX, a 1929 Dutch airliner *

Frontier Airlines Frontier Airlines, Inc. is a major American ultra low-cost airline headquartered in Denver, Colorado. It operates flights to over 120 destinations in the United States, Caribbean, Mexico and Central America, and employs more than 5,000 staff. ...

, IATA code F9, an American low-cost carrier *

Grumman F9F Panther The Grumman F9F Panther is an early carrier-based jet fighter designed and produced by the American aircraft manufacturer Grumman. It was the first jet-powered fighter aircraft to see air-to-air combat with the United States Navy as well as be ...

, a United States Navy fighter aircraft **

Grumman F-9 Cougar The Grumman F9F/F-9 Cougar is a carrier-based jet propulsion, jet-powered fighter aircraft designed and produced by the American aircraft manufacturer Grumman. It was developed during the early 1950s on behalf of the United States Navy (US Nav ...

, a swept wing version of the F9F Panther * LSWR F9 class, British locomotives of the Southern Railway *

Watsons Bay ferry services The Watsons Bay ferry service, officially known as F9 Watsons Bay, is a ferry service in Sydney, Australia. Part of the Sydney Ferries network, it is operated by Transdev Sydney Ferries from Circular Quay to Rose Bay and Watsons Bay. History ...

, numbered F9, a ferry route in Sydney, Australia

Other uses

* ''F9'' (film), a film in the ''Fast & Furious'' franchise * F 9 Säve, a former Swedish Air Force wing * F9 (classification), a wheelchair sport classification * F-9 Park (Fatima Jinnah Park), a public recreational area in Islamabad * F9 Financial Reporting, a financial reporting software application *

Factor IX Factor IX (), also known as Christmas factor, is one of the serine proteases involved in coagulation; it belongs to peptidase family S1. Deficiency of this protein causes haemophilia B. It was discovered in 1952 after a young boy named Stephen ...

, a coagulation factor * , a

function key A function key is a key on a computer or computer terminal, terminal computer keyboard, keyboard that can be programmed to cause the operating system or an application program to perform certain actions, a form of soft key. On some keyboards/com ...

on a computer keyboard * Zeolite F-9, a sodium-type

molecular sieve A molecular sieve is a material with pores of uniform size comparable to that of individual molecules, linking the interior of the solid to its exterior. These materials embody the molecular sieve effect, in which molecules larger than the pore ...

with faujasite framework structure, also known as 13X

Transport and vehicles

Other uses

See also