Abstract
The B^0\bar{B^0} oscillation frequency \Delta m_d has been measured with the BaBar detector at the PEP-II asymmetric B factory with different experimental techniques. The discussion here is focused on the recent simultaneous measurement of \Delta m_d and \tau_{B^0} with exclusively reconstructed B^0 \to D^{*-}l^+\nu_l decays, based on 23 million B\bar{B} pairs collected by BaBar. The measurements of \Delta m_d with fully reconstructed hadronic decays and with dilepton events are also reviewed. The average BaBar result is \Delta m_d = 0.500 \pm 0.008 \pm 0.006 ps^{-1}.