To provide a novel diaminobiphenyl derivative and an electrophotographic photoreceptor with high sensitivity using the same.

The diaminobiphenyl derivative is represented by general formula (I). The electrophotographic photoreceptor comprises the same. In general formula (I), R1-R8 are the same or different and are each an optionally substituted aryl group, a linear or branched alkyl group, or a linear or branched alkoxy group; R9-R23 are the same or different and are each a halogen atom, an optionally substituted aryl group, a linear or branched alkyl group, or a linear or branched alkoxy group; a-e are each an integer of 0-4; f-i are each an integer of 0-3; j-o are each an integer of 0-5; s, t, x and y are each an integer of at least 1; provided that, when a-o are each at least 2, each of R9-R23 may be the same or different group.