The Book of Shemaiah the Prophet is one of the lost books of the Old Testament. It was probably written by the Biblical Prophet Shemaiah, who lived at the time of Rehoboam. The book is described at 2 Chronicles 12:15. The passage reads: "Now the acts of Rehoboam, first and last, are they not written in the book of Shemaiah the prophet, and of Iddo the seer concerning genealogies? And there were wars between Rehoboam and Jeroboam continually."
This text is sometimes called Shemaiah the Prophet or The Acts of Shemaiah the Prophet.