A high-frequency circuit 10 includes: a termination resistor 12a embedded to a surface of a substrate 21; and a signal line 11a formed on the surface of the substrate 21, the signal line having a junction segment CJ, the junction segment CJ covering a portion of an upper surface of the termination resistor 12a so that at least a portion along a width of the junction segment CJ that extends from the start position to the end position is connected to the termination resistor 12a. A width WS of the signal line 11a at the start position of the junction segment CJ is equal to or greater than a width WT of the upper surface of the termination resistor 12a at the start position.
