Bf 110 V2
Completed on 24 October 1936 using two Daimler-Benz DB 600 engines. It was assigned directly to the Luftwaffe test centre at Rechlin. Test pilots were pleased with its speed but disappointed in its maneuverability

Bf 110 V3
Same airframe as the V1 and V2 but was intended as a weapons test aircraft and had nose changes for armament. Completed and test flown on 24 December 1936 and also assigned to Rechlin.

Bf 110 A
Prototypes with two Junkers Jumo 210 B engines.

Bf 110 A-0
The designation of the first four pre-production aircraft. Armament consisted of four fixed MG 17 7.92 mm machine guns in the nose and one moveable MG 15 7.92 mm machine gun in the rear cockpit canopy.

Bf 110 B
Small-scale production with two Jumo 210 engines.

Bf 110 B-0
First pre-production aircraft, similar to B-1.

Bf 110 B-1
Zerstörer, four 7.92 mm MG 17 machine guns and two 20 mm MG FF cannons, nose-mounted.

Bf 110 B-2
Reconnaissance, both MG FF cannons removed, and various camera models added.

Bf 110 B-3
Trainer. MG FF cannons removed, and extra radio gear added. Some war weary B-1 were later refitted as B-3s.

Bf 110 C
First major production series, DB 601 engines.

Bf 110 C-0
Ten pre-production aircraft.

Bf 110 C-1
Zerstörer, DB 601 B-1 engines.

Bf 110 C-2
Zerstörer, fitted with FuG 10 radio, upgraded from FuG III.

Bf 110 C-3
Zerstörer, upgraded 20 mm MG FFs to MG FF/M.

Bf 110 C-4
Zerstörer, upgraded crew armour.

Bf 110 C-4/B
Fighter-bomber based on C-4, fitted with a pair of ETC 500 bomb racks and upgraded DB 601 Ba engines.

Bf 110 C-5
Reconnaissance version based on C-4, both MG FF removed, and Rb 50/30 camera installed, uprated DB 601P engines.

Bf 110 C-6
Experimental Zerstörer, additional single 30 mm (1.18 in) MK 101 cannon in underfuselage mount, DB 601P engines.

Bf 110 C-7
Fighter-bomber based on C-4/B, two ETC 500 centreline bomb racks capable of carrying two 250, 500, or 1,000 kg (2,204 lb) bombs, uprated DB 601P engines.

Bf 110 D
Heavy fighter/fighter-bomber, extreme range versions based on C-series, prepared to operate with external fuel tanks. Often stationed in Norway.

Bf 110 D-0
Prototype utilizing C-3 airframes modified with 1,050 L (277 US gal) belly-mounted tank called Dackelbauch ("dachshund's belly" in German).

Bf 110 D-1
Long-range Zerstörer, modified C series airframes with option to carry Dackelbauch belly tank and underwing drop tanks. Bf 110 D-1/R1
Long-range Zerstörer, Dackelbauch ventral tank, option to carry additional wing mounted 900 L (240 US gal) drop tanks.

Bf 110 D-1/R2
Long-range Zerstörer, droppable 85 L oil tank under the fuselage instead of Dackelbauch ventral tank, two wing mounted 900 L (240 US gal) drop tanks.

Bf 110 D-2
Long-range Zerstörer, two wing-mounted 300 L (80 US gal) drop tanks and centreline mounted bomb racks for two 500 kg (1,100 lb) bombs.

Bf 110 D-3
Long-range Zerstörer, lengthened tail for rescue dinghy. Either two wing-mounted 300 L (80 US gal) or 900 L (240 US gal) drop tanks could be fitted. Optional fitting of ETC 500 bomb racks (impossible with 900 L drop tanks).

Messerschmitt Bf 110D-3 (3U+HN) of 5.ZG26, 1941

Bf 110 E
Mostly fighter bombers, strengthened airframe, up to 1,200 kg (2,650 lb) bombload.

Bf 110 E-0
Pre-production version, Daimler-Benz DB 601B engines, pair of ETC50 bomb racks fitted outboard of engines, armament as C-4.

Bf 110 E-1
Production version of E-0, DB 601P engines.

Bf 110 E-1/U1
Two-crew night fighter conversion, equipped with the Spanner-Anlage infrared homing device.

Bf 110 E-2
DB 601P engines, rear fuselage extension same as for D-3.

Bf 110 E-3
Long-range reconnaissance version, both MG FF removed, and Rb 50/30 camera installed.

Bf 110 F
Same as the E, again strengthened airframe, better armour, two 993 kW (1,350 PS) DB 601F engines.

Bf 110 F-1
Fighter-bomber.

Bf 110 F-2
Long-range Zerstörer, often used against Allied heavy bombers.

Bf 110 F-3
Long-range reconnaissance version.

Bf 110 F-4
The first real night fighter (specially designed for this usage, 3-crew).

Bf 110 G
Improved F-series, two 1,085 kW (1,475 PS) DB 605B engines, tail rudders increased in size.

Bf 110 G-1
Not built.

Bf 110 G-2
Fighter-bomber, fast bomber, destroyer, often used against Allied heavy bombers. (often equipped with rockets).

Bf 110 G-2/R1
Bf 110 G-2 armed with a BK 3,7 under the fuselage.

Bf 110 G-2/R4
Bf 110 G-2 armed with a BK 3,7 under the fuselage and two MK 108 in the nose

Bf 110 G-3
Long-range reconnaissance version.

Bf 110 G-4
Three-crew night fighter, FuG 202/220 Lichtenstein radar, optional Schräge Musik, usually mounted midway down the cockpit with the cannon muzzles barely protruding above the canopy glazing. Multiple combinations of engine boosts, Schräge Musik, radar arrangements and forward firing armament were available in the form of Rüstsätze and Umrüst-Bausätze kits.

Bf 110 H
The final version, similar to the G, was cancelled before any prototypes were ready after important documents were lost in an air-raid on the Waggonbau Gotha-factory, which was leading the H-development.