To provide a clock reproduction device for reproducing a stable clock at high speed.

In the clock reproduction device which obtains a reproduction clock for data reception from received data and includes: a reproduction clock generation part which generates reproduction clocks including discontinuity from the received data; and a reproduction clock multiplication part which multiplies the reproduction clocks to be output from the reproduction clock generation part for a predetermined time, reproduction clock signals including discontinuity output from the reproduction clock generation part are calculated by the reproduction clock multiplication part, and continuous reproduction clocks are obtained.