New Parton Distribution Functions for the Photon

We present new improved parton distributions for the photon. We fit {\\bf all} available data on the photon structure function, $F^{\\gamma}_{2}(x,Q^2)$, with $Q^2\\ge 3$ GeV$^2$, in order to determine the quark distributions. We also pay particular attention to the gluon distribution in the photon, $g^{\\gamma}(x,Q^2)$, which has been poorly constrained in earlier analyses which only include structure function data. We use large $p_T$ jet production in $\\gamma \\gamma$ collisions from TRISTAN to constrain $g^\\gamma $. We also see what information can be gleaned from $\\gamma p$ collisions at HERA on $g^{\\gamma}$ and on the quark distributions at large $x$, where there are no structure function data. We review future prospects of elucidating the parton distributions of the photon.