  We revisit sneutrino dark matter in light of the recent results from the
PAMELA and ATIC experiments. In the U(1)_B-L extension of the minimal
supersymmetric standard model the right-handed sneutrino is a natural candidate
for thermal dark matter. Sneutrino annihilation at the present time can be
considerably enhanced due to the exchange of the lightest field in the Higgs
sector that breaks U(1)_B-L. The annihilation mainly produces taus (or muons)
by the virtue of B-L charges. A sneutrino mass in the 1-2 TeV range provides a
good fit to the PAMELA data and a reasonable fit to the ATIC data. Within this
mass range the sneutrino-nucleon elastic scattering cross section is 10^(-11) -
10^(-9) pb, which might be probed by upcoming and future direct detection
experiments. In addition, if (at least) one of the neutrinos is dominantly a
Dirac fermion, the sneutrino can provide a unified picture of dark matter and
inflation.
