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Suzaku observations of a TeV unidentified (unID) source, HESS J1745-303, arepresented. A possible excess of neutral iron line emission is discovered, andis likely associated with the main part of HESS J1745-303, named "region A". Itmay be an X-ray reflection nebula where the X-rays from previous GalacticCenter (GC) activity are reflected by a molecular cloud. This result furtherstrengthens the assumption that the molecular cloud which is spatiallycoincident with region A of HESS J1745-303 is located in the GC region. The TeVemission from molecular clouds is reminiscent of the diffuse TeV gamma-raysfrom the GC giant molecular clouds, and it could have the same emissionmechanism. With deep exposure mapping observations by Suzaku, a tightupper-limit on the 2-10 keV continuum diffuse emission from region A isobtained, as 2.1x10^-13ergs s^-1cm^-2. The flux ratio between 1-10 TeV and 2-10keV is larger than 4. Possible scenarios to reproduce wide-band spectra fromkeV to TeV are examined. Thermal X-rays from nearby two old supernova remnants,G359.0-0.9 and G359.1-0.5, are detected, and their emission properties are welldetermined in the present study with deep exposure.

X-Ray Observation of Very High Energy Gamma-Ray Source, HESS J1745-303, with Suzaku