  We report the observation of a large anisotropic topological Hall effect
(THE) in the hexagonal non-collinear magnet Fe5Sn3 single crystals. It is found
that the sign of the topological Hall resistivity is negative when a magnetic
field H perpendicular to the bc-plane (H\perp bc-plane), however, it changes
form negative to positive when H parallel to the c-axis (H\parallel c-axis).
The value of topological Hall resistivity increased with the increasing
temperature and reached approximately -2.12 \mu\Omega cm (H\perp bc-plane) and
0.5 \mu\Omega cm (H\parallel c-axis) at 350 K, respectively. Quantitative
analyses of the measured data suggest that the observed anisotropic THE may
originate from the opposite scalar spin chirality induced by the magnetic
fields perpendicular and parallel to the c-axis, respectively.
