Optical circuit board and optical and electric combined board

The present invention is to provide an optical circuit board enabling the easy alignment of the positions of a core of an optical pin with the positions of a core of an optical waveguide layer with a simple structure. The optical circuit board comprises an optical wiring layer having optical waveguides and the optical pin is inserted into a hole formed in the optical wiring layer and cutting a part of the optical waveguide. The optical pin comprises a core and a clad, and first recesses are formed in one of its outer surfaces. Projections used as guides for positioning the optical pin together with the recesses are formed on one of the wall surfaces of the hole.