|The Dornier Libelle II in the Deutsches Museum München|
|First flight||16 August 1921|
|Number built||2x Do A + 5x Libelle I + 3x Libelle II|
The Dornier Libelle (en:"Dragonfly I"), also designated Do A, was a German open-cockpit, all-metal, parasol wing, monoplane flying boat aircraft, with partly fabric-covered wings. A landplane version, built without sponsons and fitted with a fixed tailwheel undercarriage was produced as the Dornier Spatz.
- Do A
- Two prototypes of the Libelle
- Libelle I
- The standard production model, five built, fitted with Siemens-Halske Sh 4 engines and two built with 59.7 kW (80 hp) Siemens-Halske Sh 5 engines.
- Libelle II
- The improved Libelle II was powered by Siemens-Halske Sh 5 or 75 kW (101 hp) Siemens-Halske Sh 11 engines. Other engines fitted to Libelle II aircraft include the Bristol Lucifer and the ADC Cirrus. Three built.
Specifications (Libelle I)
Data from 
- Crew: one
- Capacity: two passengers
- Length: 7.18 m (23 ft 7 in)
- Wingspan: 8.5 m (27 ft 11 in)
- Height: 2.27 m (7 ft 5 in)
- Wing area: 14 m2 (150 sq ft)
- Empty weight: 420 kg (926 lb)
- Gross weight: 640 kg (1,411 lb)
- Fuel capacity: fuel 42 kg (93 lb)fuel + oil 10 kg (22 lb)
- Powerplant: 1 × Siemens-Halske Sh 4 5-cyl. air-cooled radial piston engine, 45 kW (60 hp)
- Maximum speed: 120 km/h (75 mph; 65 kn)
- Cruise speed: 100 km/h (62 mph; 54 kn)
- Range: 300 km (186 mi; 162 nmi)
- Service ceiling: 1,600 m (5,200 ft)
- "Do A Libelle". Germany: histaviation.com. Retrieved 27 February 2012.
- Donald, David, ed. (1997). The Encyclopedia of World Aircraft. Prospero Books. p. 347. ISBN 1-85605-375-X.
- Ogden, Bob (2006). Aviation Museums and Collections of Mainland Europe. Tonbridge, Kent: Air-Britain (Historians) Ltd. ISBN 0-85130-375-7.
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