  We study motion of test particles and photons in the vicinity of (2+1)
dimensional Gauss-Bonnet (GB) BTZ black hole. We find that the presence of the
coupling constant serves as an attractive gravitational charge, shifting the
innermost stable circular orbits outward with respect to the one for this
theory in 4 dimensions. Further we consider the gravitational lensing, to test
the GB gravity in (2+1) dimensions and show that the presence of GB parameter
causes the bending angle to grow up first with the increase of the inverse of
closest approach distance, $u_0$, then have its maximum value for specific
$u_0^*$, and then reduce until zero. We also show that increase in the value of
the GB parameter makes the bending angle smaller and the increase in the
absolute value of the negative cosmological constant produces opposite effect
on this angle.
