A fuel cell separator which is low in cost and high in hydrophilicity and electrical conductivity and a process for producing the fuel cell separator. The fuel cell separator is characterized in that by using a starting material for a fuel cell separator subjected to a hydrophilization treatment in a hydrophilizing gas, the surface contact angle of the fuel cell separator as measured by a sessile drop method using water is in a range of 3 to 70; and the process of the present invention for producing a fuel cell separator is characterized in that a starting material for the fuel cell separator after molding or machining is subjected to a hydrophilization treatment in a hydrophilizing gas and thereby the surface contact angle of the fuel cell separator as measured by a sessile drop method using water is controlled at 3 to 70.