A hydraulic tube connector for a vehicle includes: a connector body including a first through-hole, into which a tube having a tube protrusion extending outward from the tube is inserted, and a sealing O-ring hole at one side of the first through-hole; a sealing O-ring coupled to the sealing O-ring hole and into which the tube is inserted; and a stopper coupled to the connector body to prevent the sealing O-ring from being separated from the sealing O-ring hole and including a stopper groove having one side opened to allow the tube to be fitted through the stopper groove.