Variants
Do 17E-1   Initial production model, powered by 2 × BMW VI High compression engines, armed with a single 7.92 mm MG 15 in Dorsal and Ventral hatch positions. Max bombload of 1,102 lb (500 kg). 
Do 17F-1   Reconnaissance version, export variant for Yugoslavia, fitted with 2 × Gnome-Rhône 14N-1/2 radials, later Yugoslavia built some aircraft under license, armament of all craft consisted of 1 × 20 mm cannon, and 3 × 7.92mm guns. Maximum bombload was 2,205 lb (1.000 kg). 
Do 17Kb-1   Bomber, Subvariant of the Do 17 K 
Do 17Ka-1   Reconnaissance/bomber, Subvariant of the Do 17 K 
Do 17Ka-2   Reconnaissance/bomber, Subvariant of the Do 17 K, but with different equipment than Do 17 Ka-1. 
Do 17M   Bomber, Identical to Do 17 E-1, powered by 2 × BMW-Bramo 232A-1 fafnir radial, with use of a two-stage supercharger. One 7.92 mm MG 15 was added, a forward firing clamped/trainable gun operated by either the pilot or the navigator 
Do 17 M-1/Trop   Bomber, Identical to Do 17 M-1, but with provisions for use in North African theatre by adding a Desert survival kit and sand/dust filters over the carburetor air inlets. 
Do 17 M-1/U1   Bomber Identical to the Do 17 M-1, but dorsal gun placement moved forward to accomodate a survival dinghy. 
Do 17P   Reconnaissance, Powered by 2 × BMW 132N radial, one 7.92 mm MG 15 was added, a forward firing clamped/trainable gun operated by either the pilot or the navigator 
Dornier Do 17U-1   Specialized Pathfinder, cockpit received a higher roof which was fully glazed, the bombardiers position was fully glazed deepened and extended, thus provided much better field of vision for the guns. Powerplants: 2 × Daimler-Benz DB600A
Do 17Z   Definitive version of the Do 17, it sported a number of subvariants. 
Do 17Z-1   Bomber,Subvariant of the Do 17Z. Powerplant: 2 × BMW-Bramo 323A-1 Fafnir. 4 × 7.92 mm guns in ventral, rearcockpit, windscreen and nose positions. 
Do 17Z-2   Bomber Subvariant of the Do 17 Z. See above for statistics. 
Do 17Z-3   Reconnaissance Bomber, Subvariant of the Do 17Z. Equal to the Do 17Z-2, but configured as a reconnaissance bomber. It was equiped with 2 rb 20/30 automatic cameras, and a max bombload of 1,102 lb (500 kg). 
Do 17Z-4   Subvariant of the Do 17Z. Converted to a dual-control trainer 
Do 17Z-5   Subvariant of the Do 17Z. Equiped with inflatble flotation bags and live saving equipment for operations over water 
Do 17Z-10 Kauz II (Screeching Owl)   Last 9 aircraft of Do 17 production (DO 17 Z-3) were converted to nightfighter standard, Dornier designed a new nose, which carried the the Spanner-Anlage IR sensor, which was capable of detecting aircraft exhausts. equiped with 2 × 20 mm MG FF cannon, and 4 × 7.92 mm MG 17 machineguns, all fixed forward firing. The Spanner-Anlage proved to be inadequate, unable to identify friend or foe and lacking range. The Z-10's where then refitted with Lichtenstein SN-2 radar system. (9 built)
Dornier Bacalao (salt pod)   Dornier Do 17E-1 passed on to the Spanish Nationalist air force, designated Bacalao.
Do 215 B   Export version of Dornier Do 17 Z, except some equipment changes made by the ordering countries. 
(92 built)
Do 215B-1   Bomber Starting as a september 1939 order for Sweden, the German governement embargoed all export of the type. Originally called Do 215A-1, these aircraft were refitted for use as a reconnaissance bomber, power by 2 × Daimler-Benz DB 601A inverted Vee, rated at 1,075 hp (801 kW) each. 
Do 215B-3   2 aircraft were sent to the USSR as part of the non-aggression pact, designated Do 215 B-3 
Do 215B-4   Reconnaissance bomber version, the Do 215B-4 was equiped with 1 Rb 50/30 camera, and 1 Rb 20/30 camera. A maximum of 1,102 lb (500 kg) of bombs could be carried. 
Do 215B-5   Nightfighter version, converted from Do 215B-4 and had the same cockpit, same armament and same IR unit. The IR unit however was replaced by a FuG 202 Lichtenstein BY airborne interception radar (20 built)