A prototype Ju 88V1 flew for the first time on 21 December 1936 and entered service as the Ju 88A-1 which was available when the war began. The main bomber variant was the Ju 88A-4 and was continually improved up to the Ju 88S fast bomber of 1943 with nitrous oxide-boosted BMW 801G engines. Radar-equipped night fighter variants began with the Ju 88C-6b (developed from the Ju 88C heavy fighter which fought during the Battle of Britain) and the Ju 88R (same as the Ju 88C but with a different powerplant) although the main version would be the Ju 88G which was equipped with a FuG 227 radar and upwards-firing cannon which was to become the mainstay of the Luftwaffe's night fighter force during the last months of the war. Other variants included the Ju 88A-6/U and A-17 maritime attack aircraft, the Ju88A-13 and Ju 88P ground-attackers (the latter equipped with the heavy cannon configurations mentioned above as well as the solid nose of early aircraft) and the Ju 88H-2 heavy fighter while photo-reconnaissance variants included the Ju 88H-1 and Ju 88T. Perhaps the most interesting development of the Ju 88 was as a guided missile platform known as Mistel (Mistletoe) where an explosive-laden aircraft (usually a Ju 88H-3 or H-4) was flown towards target by a parent fighter. Few were actually launched with limited success.

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| Design | Ju 88A-4 | Ju 88D-1 | Ju 88C-6 | Ju 87G-7 | Ju 88S-1 |
| Name | - | - | - | - | - |
| Code Name | - | - | - | - | - |
| Type | Medium Bomber | Reconnaissance | Night Fighter | Night Fighter | Medium Bomber |
| Year | 1940 | 1940 | 1942 | 1944 | 1944 |
| Crew | 4 | 4 | 3 | 4 | 4 |
| Speed | 470 km/h | 485 km/h | 500 km/h | 643 km/h | 610 km/h |
| Ceiling | 8,200 m | 8,000 m | 9,900 m | 8,800 m | 11,000 m |
| Range | 1,790 km | 4,795 km | 1,980 km | 2,300 km | 2,000 km |
| Engine | 2 x 999-kW Junkers Jumo 211F | 2 x 1,044-kW Junkers Jumo 211J | 1 x 1,044-kW Junkers Jumo 211JB | 2 x 1,268-kW BMW 801D/G | 2 x 1,290-kW BMW 801G |
| Weight Empty | 9,860 kg | 8,850 kg | 8,560 kg | 9,100 kg | 8,300 kg |
| Weight Max | 14,000 kg | 12,350 kg | 12,350 kg | 14,690 kg | 10,490 kg |
| Wing Span | 18.26 m | 20.08 m | 20.08 m | 20.08 m | 20.08 m |
| Length | 14.40 m | 14.36 m | 14.36 m | 16.50 m | 14.40 m |
| Height | 4.85 m | 4.85 m | 5.07 m | 4.85 m | 4.85 m |
| Wing Area | 54.50 m² | 54.50 m² | 54.50 m² | 54.40 m² | 54.50 m² |
| Armament | 8 x 7.92-mm | 3 x 13-mm | 5 x 20-mm 1 x 13-mm 3 x 7.92-mm | 6 x 20-mm 1 x 13-mm | 1 x 13-mm |
| Payload | 3,000 kg | - | - | - | 2,000 kg |
| Production | 7,000 | 2,000 | 3,200 | 2,800 | 550 |
| Total | 14,980 |