  Using stellar luminosity functions derived from ROSAT data, the contributions
of Galactic stars to the diffuse X-ray background are calculated for ROSAT PSPC
energy bands. The model follows that of Guillout et al. (1996), but uses ROSAT
rather than {\it Einstein} data to determine the intrinsic luminosity
distributions. The model adequately predicts the numbers of stellar sources
observed in deep ROSAT surveys. The contribution of unresolved stellar sources
to the ROSAT All-Sky Survey at the Galactic poles is 6.85, 4.76, and 4.91
$\times$ counts s$^{-1}$ arcmin$^{-2}$ in bands R12 (1/4 keV), R45(3/4 keV),
and R67(1.5 keV), respectively, which is equivalent to 4.66, 31.3 and 26.9
$\times10^{-14}$ ergs cm$^{-2}$ s$^{-1}$ deg$^{-2}$.
