A radio frequency amplifier includes: a transistor; an input line; an output line; and a shunt circuit that is connected between ground and the input line or the output line, wherein the shunt circuit includes: a first series resonant circuit that includes an inductor and a capacitor that are connected in series and has first resonant frequency f1; a second series resonant circuit that includes an inductor and a capacitor that are connected in series and has second resonant frequency f2 that is different from the first resonant frequency; and a resistor that is connected between a first connection point and a second connection point, the first connection point being a connection location between the inductor and the capacitor in the first series resonant circuit, the second connection point being a connection location between the inductor and the capacitor in the second series resonant circuit.