  Estimates of $H_0$ from Sunyaev-Zel'dovich effect (SZE) and X-ray surface
brightness of galaxy clusters depends on the underlying cosmology. In the
current $\Lambda$CDM flat cosmology, a possible technique to broke the
degenerescency on the mass density parameter ($\Omega_{m}$) is to apply a joint
analysis involving the baryon acoustic oscillations (BAO). By adopting this
technique to the ($H_0, \Omega_m$) parameter space, we obtain new constraints
on the Hubble constant $H_0$ from BAO signature as given by the Sloan Digital
Sky Survey (SDSS) catalog. Our analysis based on the SZE/X-ray data for a
sample of 25 clusters yields $H_0= 74^{+4}_{-3.5}$ km s$^{-1}$ Mpc$^{-1}$
($1\sigma$, neglecting systematic uncertainties). This result is in good
agreement with independent studies from the {\it{Hubble Space Telescope}} key
project and the recent estimates of WMAP, thereby suggesting that the
combination of these three independent phenomena provides an interesting method
to constrain the Hubble constant.
