  In supersymmetric theories, sneutrino--anti-sneutrino mixing can occur with
the oscillation time $\sim 0.01$ ps corresponding the atmospheric neutrino mass
scale $\sim 0.05$ eV. We explore the possibility of observing sneutrino
oscillation phenomena and CP violation when R-parity violation explains the
observed neutrino masses and mixing. It is shown for some parameter region in
the bilinear model of R-parity violation that the tiny sneutrino mass splitting
and time-dependent CP violating asymmetries could be measured in the future
experiments if the tau sneutrino is the lightest supersymmetric particle.
