Provided is a silent chain. The silent chain includes a first guide plate having a first outer groove in a rear surface thereof, a second guide plate spaced apart from the first guide plate in a first direction, a first middle plate disposed between the first and second guide plates, at least one first inner plate disposed between the first middle plate and the first guide plate and having first inner grooves in a rear surface thereof, at least one second inner plate disposed between the first middle plate and the second guide plate, and a first connection pin configured to connect the first and second guide plates, the first and second inner plates, and the first middle plate to each other. The first inner groove and the first outer groove are located on an imaginary first line.