  We study tachyon field inflation in the light of the Planck+WMAP+BICEP2+BAO
joint data. While the minimally coupled tachyon field inflation is consistent
with the Planck2013 data, it is not confirmed by the Planck+WMAP+BICEP2+BAO
dataset. However, a nonminimally coupled tachyon field inflation is consistent
with this joint dataset.
