  We present grids of limb-darkening coefficients computed from non-LTE,
line-blanketed TLUSTY model atmospheres, covering effective-temperature and
surface-gravity ranges of 15--55kK and 4.75 dex (cgs) down to the effective
Eddington limit, at 1x, 1x, 0.5x (LMC), 0.2x (SMC), and 0.1x solar. Results are
given for the Bessell UBVRIJKHL, Sloan ugriz, Stromgren ubvy, WFCAM ZYJHK,
Hipparcos, Kepler, and Tycho passbands, in each case characterized by several
different limb-darkening `laws'. We examine the sensitivity of limb darkening
to temperature, gravity, metallicity, microturbulent velocity, and wavelength,
and make a comparison with LTE models. The dependence on metallicity is very
weak, but limb darkening is a moderately strong function of log(g) in this
temperature regime.
