Vertical gravity data from 6.3 years of observations at the geographic South Pole have been analyzed to determine the gravimetric factor and phase angle of the long-period tides. Annual and semiannual tides are obscured by the combination of signals arising from instrumental drift and the large annual component of barometric pressure changes at Pole. Gravimetric factors for the three major long-period tides are Δ(Mf=1.1589¿0.0017, Δ(Mm)=1.1406¿0.0085, and Δ(Mtm)=1.1692¿0.0068. The only statistically significant phase shift is for the fortnightly component λ=0.0151¿0.0032 days, a phase lead. Our data analysis for the Mf at the South Pole indicates that the calculation of the influence of the long-period ocean tides on the earth tides at the South Pole should be reconsidered.