An antenna includes first and second antenna elements, and first and second coupling bodies. The first and second antenna elements respectively include first and second radiation conductors and first and second feed lines, and respectively resonate in first and second frequency bands. The first and second radiation conductors are arranged side-by-side at an interval equal to or shorter than ½ a resonance wavelength. The first and second radiation conductors are coupled under a first coupling mode in which one of capacitive coupling and magnetic field coupling is dominant. The first coupling body couples first end portions of the first and second radiation conductors under a second coupling mode different from the first coupling mode. The second coupling body couples second end portions of the first and second radiation conductors, opposite to the first end portions, under the second coupling mode.