| Class Image: | X-79 red.svg |
| Loa: | 7.93m (26.02feet) |
| Lwl: | 6.4m (21feet) |
| Beam: | 2.88m (09.45feet) |
| Draft: | 1.37m (04.49feet) |
| Year: | 1979 |
| Designer: | Niels Jeppesen |
| Builder: | X-Yachts |
X-79 is a 7.93m (26.02feet) sailboat class designed by Niels Jeppesen and built in about 500 copies.
Niels Jeppesen designed the X-79 to compete in the Sjælland Rundt.