A differential transmission circuit is capable of realizing a high resistance to electrostatic breakdown without deteriorating a transmission signal. The differential transmission circuit includes ESD protection elements connected between transmission lines and a ground, respectively, a common mode filter in which an inductor element is serially connected between transmission lines, and an inductor element serially connected between transmission lines are magnetically coupled to each other, ESD protection diodes of which cathodes are connected to transmission, respectively, and anodes thereof connected to grounds, respectively, and resistors of which one side terminals are connected to transmission lines, respectively, and the other side terminals thereof are connected to transmission lines, respectively. Resistance values of the resistors are set to 10 to 15 ohms, respectively, electrostatic capacitance values of the ESD protection elements are less than 0.3 pF, respectively, and a clip voltage of each of the ESD protection diodes is set to a value less than 10 V.