  We identify all Anosov representations of compact hyperbolic triangle
reflection groups into $\mathrm{SL}(3,\mathbb R)$. Specifically, we prove that
such a representation is Anosov if and only if it lies in the Hitchin component
of the representation space, or it lies in the Barbot component and the product
of the three generators of the triangle group has distinct real eigenvalues.
