| FNRS-1 | |
| Type: | Record-breaking balloon |
| National Origin: | Belgium |
| Manufacturer: | Fonds National de la Recherche Scientifique |
| Designer: | Auguste Piccard |
| Number Built: | 1 |
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.