  The T2K (Tokai to Kamioka) experiment is a long-baseline accelerator neutrino
oscillation experiment. Intense muon neutrino and antineutrino beams are
produced at the J-PARC accelerator complex situated in Tokai. After 280 metres
the beam goes through the set of two near detectors: INGRID and ND280, where
the beam parameters before oscillations are measured and neutrino
cross-sections are studied. After another 295 km, the distance corresponding to
the first oscillation maximum, the neutrino beam passes through the
Super-Kamiokande far detector. Comparison of the beam characteristics in the
near and far detectors makes it possible to determine the oscillation
parameters.
  Based on muon neutrino disappearance, T2K has delivered the world's leading
measurement of the $\theta_{23}$ mixing angle. It has been also the first
experiment to observe electron neutrino appearance, with a significance of
7.3$\sigma$. These results made it possible to determine the $\theta_{13}$
mixing angle and to provide the first hint of a non-zero value of the
$\delta_{CP}$ phase. The T2K experiment has also delivered several neutrino
cross-section measurements at neutrino energies around 1 GeV. Currently, T2K is
collecting data with a muon antineutrino beam, for the $\delta_{CP}$ and
antineutrino cross-section measurements.
  A summary of the most recent oscillation measurements, including the new
electron antineutrino appearance results, is presented.
