Meteoroid impacts on Mars are potential sources of seismic radiation that could be used to determine the internal structure of the planet. An estimate is made of the seismic signals that are expected on Mars based on the Lunar Apollo experiment, where large impacts, believed to be caused by stony asteroid fragments with masses greater than 10 kg, were recorded at a rate of one every 5 days. Mars is expected to have a different impact rate from the Moon because it has a different population of impactors, and ablation and deceleration in the martian atmosphere affect final impact energy. Using estimates of the mass and velocity distributions of meteoroids at Mars' orbit the atmospheric drag and ablation equations are solved to calculate the number of meteoroids which would be detected with a martian seismometer of Apollo sensitivity. The entry flux at Mars is taken to be 2.6 times the entry flux at Earth. The number of meteoroids impacting the surface as a function of energy is calculated and converted to the number expected to be detected on a seismometer assuming an energy detection threshold similar to that used during observations on the Moon. Atmospheric effects reduce the number of detectable events on Mars to about 0.8 of the value expected on Mars were no atmosphere present. The net result, which has at least a factor of three uncertainty, is that the number of large impacts per year detected by a Mars seismic station of Apollo sensitivity is calculated to be 116 events, which is similar to that on the Moon, i.e., 76 events per year.