The NHI H-3 Kolibrie (Dutch for "Hummingbird") was a small helicopter developed in the Netherlands in the 1950s by Nederlandse Helikopter Industrie.

The design is typical of ultralight helicopters of the period, being powered by tip-jets — two ramjets, one at the tip of each rotor blade.

The Kromhout-designed-and-built ramjets generated 0.196 kN (44 lbf) thrust and made a complex gear box unnecessary.

Variants with skis, flotation devices, and medical evacuation stretchers were developed and tested, but these versions were never produced.

First, the Hiller OH-23 Raven was provided to the Royal Netherlands Air Force by the United States free of charge, under the Mutual Defense Assistance Pact (MDAP).

Third, the ramjets not only required a great deal of development to make them viable for production, but potential buyers regarded them as unsafe.