Yes, but it is more difficult than jamming a typical radio antenna because the starlink uses a directed beam rather than a omnidirectional radio broadcast. This either requires enormous amounts of power, targeting the satellite itself with a directed radio beam, or getting between the satellite and the ground station by bouncing a signal off the ionosphere.
The above is for jamming directed beams in general. It is likely that starlink has a number of other jamming countermeasures.
The above is for jamming directed beams in general. It is likely that starlink has a number of other jamming countermeasures.