  Recently the AMS-02 experiment reported an excess of cosmic ray antiprotons
over the expected astrophysical background. We interpret the excess as a signal
from annihilating or decaying dark matter and find that the observed spectrum
is well fitted by adding contributions from the annihilation or decay of dark
matter with mass of O(TeV) or larger. Interestingly, Wino dark matter with mass
of around 3 TeV, whose thermal relic abundance is consistent with present dark
matter abundance, can explain the antiproton excess. We also discuss the
implications for the decaying gravitino dark matter with R-parity violation.
