| HE 1 | |
| Type: | Reconnaissance floatplane |
| National Origin: | Germany |
| Manufacturer: | Caspar-Werke |
| Designer: | Ernst Heinkel |
| First Flight: | 1923 |
| Primary User: | Swedish Navy (Marinen) |
| Number Built: | 14 |
The Heinkel HE 1 or Caspar S 1 was a two-seat, low-wing monoplane floatplane, designed in 1921 by German designer Ernst Heinkel at Caspar-Werke.
The HE 1 was produced under licence in Sweden for the Marinen (Swedish Navy) in 1921 as the Svenska S.2. The HE 1 was powered by a 179kW Maybach Mb.IVa engine; one test aircraft was powered by a Siddeley Puma engine.