  A measurement of the lifetime of the tau lepton has been made using a sample
of 1671 $Z^0\rightarrow\tau^+\tau^-$ decays collected by the SLD detector at
SLC. The measurement benefits from the small and stable collision region at SLC
and the precision vertex detector of SLD. Three analysis techniques have been
used: decay length, impact parameter, and impact parameter difference methods.
The combined result is $\tau_\tau = 297\pm 9(stat.)\pm 5(syst.)$ fs.
