  We have obtained a broad-band spectrum of the Compton-thick Seyfert 2 galaxy
NGC 2273 with Suzaku. The spectrum reveals the first detection of hard X-rays
above ~10 keV from NGC 2273. The broad-band spectrum is well represented by a
three-component model, accompanied by both a strong iron Ka line with an
equivalent width of ~ 1.8 keV and several weak lines. The three-component model
consists of a soft component, a reflection component from cold matter, and an
absorbed power-law component. The soft component can be represented by thin
thermal emission with kT~0.56 keV or by a scattered component with a scattering
fraction of 0.4%. Fixing the photon indices of the power law and reflection
components at 1.9, we found that the power law component, heavily absorbed by
gas with a column density of ~1.5x10^24 cm^-2, has an intrinsic 2-10 keV
luminosity of ~1.7x10^42 erg/s. We also apply a reflection model based on a
Monte Carlo simulation, assuming a simple torus geometry. We found that the
model fits the broad band spectrum well, and we place some tentative
constraints on the geometry of the putative torus in NGC2273.
