The invention provides a diamine compound and an electrophotographic photosensitive member. The diamine compound is represented by general formula (1) shown in the description. In the general formula (1), R1, R2, R3, R4, R5, R6, R7, R8, R9, and R10 each represent, independently of one another, a hydrogen atom, a halogen atom, an optionally substituted alkyl group having a carbon number of at least 1 and no greater than 6, an optionally substituted alkoxy group having a carbon number of at least 1 and no greater than 6, or an optionally substituted aryl group having a carbon number of at least 6 and no greater than 14. M represents an integer of at least 1 and no greater than 3. N represents an integer of at least 0 and no greater than 2.