An antenna connector has: a tubular case formed with a connector base on one end side in an axial direction and formed with a cylindrical external contact part on another end side in the axial direction; a shaft-shaped center contact part disposed on a center shaft of the external contact part; and tubular insulators disposed between the external contact part and the center contact part. A space is formed between the external contact part and the insulators. The external contact part is formed with a through-hole for draining water that establishes communication between the space and outside of the external contact part.