An antenna module, including a first antenna, a second antenna, a first ground, a third antenna, and a second ground, is provided. The first ground is located between the first antenna and the second antenna and is connected to the first antenna and the second antenna. The first ground has a first slot near the first antenna. The second antenna is located between the first antenna and the third antenna. An extension direction of the first antenna is not parallel to an extension direction of the second antenna. The extension direction of the second antenna is not parallel to an extension direction of the third antenna. The second ground is located between the second antenna and the third antenna and is connected to the third antenna. The second ground is separated from the first ground and the second antenna, and has a second slot.