An attempt is made to fabricate Cu2O porous foam via a simple and non toxic method. The method is based on electrochemical fabrication of Cu foam and thermal oxidation. The as-fabricated Cu2O foam is characterized through XRD, BET, SEM, EDX and XPS analysis. The applicability of Cu2O foam as a photocatalyst in the visible range of light is justified in a neutral solution bubbled with Argon. Photoelectrochemical measurements illustrate that the high active photocathode of Cu2O foam can achieve a photocurrent of −1.7 mA cm−2 at a potential of −0.4 V vs. Ag/AgCl. Porous Cu2O foam exhibits remarkable photostability compare to the Cu2O sheet after 7200 s of continuous work. The positive shift of about 0.1 V is observed for the onset cathodic photocurrent of the Cu2O foam compared to that of Cu2O in the same condition. The positive shift in onset potential confirms the superior photoelectrochemical property of as-fabricated Cu2O foam. The observed reduction current at the surface of Cu2O foams is higher compare to bare Cu2O toward reduction of water under light illumination. Mott–Schottky plot shows the flat-band potential of the Cu2O foam to be −0.1 V vs. Ag/AgCl and a hole concentration of 8.2 × 1019 cm−3.