A wireless communication device includes: a substrate containing a dielectric; a zeroth-order resonance antenna; a high frequency circuit mounted on the substrate and a metal body mounted on the substrate. The zeroth-order resonance antenna includes: a main plate providing a ground potential, a patch portion, a feeder line extending from a feeding point to the patch portion to electrically connect the patch portion and the high frequency circuit, at least a part thereof being arranged on a same surface as the patch portion on the substrate, and a short circuit portion. The metal body has a same potential as the main plate. The metal body has a longer length (greater height) than the patch portion in a Z direction.