The Five Greatest Warriors is a thriller novel in the Jack West Jr. series, by the Australian writer Matthew Reilly. The book is the third in an Indiana Jones–style action series. The preceding book was The Six Sacred Stones, which ended in a cliffhanger with archaeologist and ex-soldier Jack West Jr. and his team searching for the last four "Vertices of the Machine". The Four Legendary Kingdoms is its sequel. The series is published by Pan Macmillan and this book was first released on 20 October 2009 in Australia.