The FNRS-1 was a balloon, built by Auguste Piccard, that set a world altitude record. It was named after the Belgian Fonds National de la Recherche Scientifique, which funded the balloon.

• National Fund for Scientific Research
• FNRS-2, which was the first ever bathyscaphe built.
• FNRS-3, which was rebuilt from FNRS-2

• Ryan, Craig (2003). The Pre-Astronauts. Naval Institute Press. ISBN 1591147484, ISBN 978-1-59114-748-0.
• Shayler, David (2000). Disasters and accidents in manned spaceflight. Springer. pp. 20–22. ISBN 1852332255, ISBN 978-1-85233-225-9.
• Vaeth, Joseph Gordon (2005). They sailed the skies: U.S. Navy balloons and the airship program. Naval Institute Press. ISBN 1591149142, ISBN 978-1-59114-914-9.

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