The Mesquito is an American sounding rocket vehicle developed for the NASA Sounding Rocket Program on Wallops Island, Virginia.

The Mesquito was developed to provide rocket-borne measurements of the mesospheric region of the upper atmosphere.

[1] An area of great science interest is in the 82–95 km region, where the conventional understanding of atmospherics physics is being challenged.

The non-propulsive second-stage dart contains a free-flying structural body that includes an avionics suite and an experiment space with interface.

After three test launches, the project was shelved.