A waterproof electrical connector having a main housing providing a fitting section which is fitted into a contact-receiving concavity of a mating connector and a head section stretching at a rear of the fitting section in a direction in which the fitting section is fitted into the mating connector, a contact that is housed in the fitting section such that one end of the contact is housed in the head section and is connected to one end of an insulated electrical wire which is guided out in a direction perpendicular to the direction in which the fitting section is fitted into the mating connector, a cover housing that covers the head section, and a body that covers at least a boundary portion between the main housing and the cover housing.