Abstract: A waterproof connector for a vehicle includes a front holder mounted on a front side of a main housing via a front seal for watertight, and having terminal-connecting holes. The front seal and the front holder are disposed inside the first mounting hole sequentially. An inner housing with a terminal is mounted to a rear side of the main housing and has terminal insertion holes. A subcover is disposed at a rear side of the inner housing. Each terminal has a connector portion disposed inside a terminal-connecting hole of the front holder, and a wire-welding portion is disposed inside a terminal insertion hole of the inner housing. Watertight and vibration-absorbing materials are attached to a lower side of an upper cover and an upper side of a lower cover of the subcover to protect the wire-welding portions of the terminals.