  In an extension of the Standard Model with one compact extra dimension and
N=1 supersymmetry, we compute the Higgs boson decay rate into two gluons,
relevant to the Higgs production in hadronic collisions. We find that at one
loop the decay width is significantly suppressed with respect to the SM. In
particular, for a compactification radius 1/R=370 /pm 70 GeV and a Higgs mass
m_H = 127 /pm 8 GeV we find it to be less than 15% of the SM result.
