Yes, Saturn is in an orbital resonance with Jupiter. Specifically, Saturn's orbital period is approximately twice that of Jupiter's. This means for every two orbits Saturn completes, Jupiter completes one orbit around the Sun.

This 2:1 resonance plays a significant role in the stability of the Solar System and the structure of the outer planets. It helps explain why Saturn's orbit is slightly eccentric (not perfectly circular) and contributes to the stability of the rings and moons of Saturn.