The invention provides a directional coupler, high-frequency front-end module, and communication device, aiming to realize stable and high coupling performance for multiple high frequency signals withdifferent frequencies. The directional coupler (10) includes first and second transmission lines (11M, 12M), first and second coupling lines (11S, 12S), a termination resistor (13), a coupling signaloutput terminal (Pcp), and an impedance-adjusting circuit (14). The first coupling line (11S) is electromagnetically coupled to the first transmission line (11M). The second coupling line (12S) is connected in series with the first coupling line (11S) and is electromagnetically coupled to the second transmission line (12M). The termination resistor (13) is connected to an end portion of the firstcoupling line (11S) that is on the opposite side from the end portion of the first coupling line (11S) that is connected to the second coupling line (12S). The coupling signal output terminal (Pcp) is connected to an end portion of the second coupling line (12S) that is on the opposite side from the end portion of the second coupling line (12S) that is connected to the first coupling line (11S).The impedance-adjusting circuit (14) is connected between the first and second coupling lines(11S, 12S).