A waterproof connector capable of maintaining high waterproof properties even under high water pressure is provided. The waterproof connector includes: a connector main body having connection terminals held by a housing; a casing having a connector accommodating portion in which the connector main body is accommodated; and a sealing material fixed to an outer peripheral portion of the housing and preventing water from entering between the housing and the casing. The sealing material includes a peripheral abutting portion configured to abut against an inner peripheral surface of the connector accommodating portion, and a rear abutting portion configured to abut against a rear wall portion of the connector accommodating portion, and the housing includes a sealing material supporting surface configured to support a rear surface portion of the rear abutting portion.