Abstract: This application relates to the field of communication technologies, and provides an antenna and a communication device, to resolve a problem of mutual coupling between radiators in the antenna. The antenna provided in this application includes a first radiation assembly and a second radiator. An operating frequency band of the first radiation assembly is greater than an operating frequency band of the second radiator. The first radiation assembly may include a first radiator and a first director. A resonant frequency of the first radiator is greater than or equal to 0.4F0 and less than or equal to 0.6F0. The first director is located in a radiation direction of the first radiator and coupled to the first radiator.