The Fokker G.I was a Dutch twin-engined heavy fighter aircraft comparable in size and role to the German Messerschmitt Bf 110.

The Fokker G.I utilized a twin-engined, twin-boom layout that featured a central nacelle housing two or three crew members (a pilot, radio operator/navigator/rear gunner or a bombardier) as well as a formidable armament of twin 23 mm (.91 in) Madsen cannon and a pair of 7.9 mm (.31 in) machine guns (later eight machine guns) in the nose and one in a rear turret.

At its introduction at the Paris Air Show in November 1936, even before its first flight, the G.I was a sensation, appearing in a purple and yellow finish (evocative of the Spanish Republican colors, thought to be Fokker's first export customer).

The G.I prototype, powered by 485 kW (650 hp) Hispano-Suiza 14AB-02/03 engines, had its first flight at Welschap Airfield, near Eindhoven on 16 March 1937 with Karel Mares at the controls.

Despite receiving payment, the order was destined never to be fulfilled as the Dutch government placed an embargo on the sale of military equipment to Spain.

[4] Fokker however continued building the aircraft and a story was released to the press that they were intended for Finland, hence the persistent tales about a "Finnish" order.

[5] To make matters more complex, Finland showed great interest in the G.I, but eventually purchased Bristol Blenheim light bombers.

The aircraft were actively involved in border patrols and in order to ensure neutrality, on 20 March 1940, a G.1 from 4th JaVA forced down an Armstrong Whitworth Whitley from the RAF's 77 Squadron when it strayed into Dutch air space.

[8] Although reports are fragmentary and inaccurate as to the results, G.1 fighters were employed over Rotterdam and the Hague, contributing to the loss of 167 Ju 52s, scoring up to 14 confirmed aerial kills.

The crew's subterfuge involved acquiring additional fuel for the supposed test flight as well as ducking into clouds to deter the trailing Luftwaffe aircraft from following.