  Inclusive jet cross sections are measured in photoproduction at HERA using
the H1 detector. The data sample of e+ p -> e+ + jet + X events in the
kinematic range of photon virtualities Q^2 < 1 GeV^2 and photon-proton
centre-of-mass energies 95 < W_gammap < 285 GeV represents an integrated
luminosity of 24.1 pb^-1. Jets are defined using the inclusive k_T algorithm.
Single- and multi-differential cross sections are measured as functions of jet
transverse energy E_T^jet and pseudorapidity \eta^jet in the domain 5 < E_T^jet
< 75 GeV and -1 < \eta^jet < 2.5. The cross sections are found to be in good
agreement with next-to-leading order perturbative QCD calculations corrected
for fragmentation and underlying event effects. The cross section differential
in E_T^jet, which varies by six orders of magnitude over the measured range, is
compared with similar distributions from p pbar colliders at equal and higher
energies.
