  We report the discovery of a diffuse radio emission around PSR J0855--4644
using an upgraded GMRT (uGMRT) observation at 1.35 GHz. The radio emission is
spatially coincident with the diffuse X-ray pulsar wind nebula (PWN) seen with
XMM but is much larger in extent compared to the compact axisymmetric PWN seen
with Chandra. The morphology of the emission, with a bright partial ring-like
structure and two faint tail-like features strongly resembles a bow shock
nebula, and indicates a velocity of 100 km/s through the ambient medium. We
conclude that the emission is most likely to be associated with the radio PWN
of PSR J0855-4644. From the integrated flux density, we estimate the energetics
of the PWN.
