A transmission module, a transmission cable, and a connector are provided. The transmission module includes a connector component including a connector side substrate having a terminal component including a ground terminal and a data terminal, and a transmission cable component including a cable side substrate having a flexibility on which a cable side ground layer electrically connected to the ground terminal and a signal line are provided, wherein the cable side ground layer disposed at least at lower and upper sides of the signal line is folded, wherein a connector side ground layer electrically connected to the ground terminal is provided on the connector side substrate, and wherein the connector side ground layer disposed at least at lower and upper sides of an area where electromagnetic noises are generated is folded.