Orphan Star (1977) is a science fiction novel written by Alan Dean Foster. The book is Foster's eighteenth published book, his fifth original novel, and is chronologically the third entry in the Pip and Flinx series. Bloodhype (1973) was the second novel to include Pip and Flinx, but it is eleventh chronologically in the series and the two characters had a relatively small part in that novel's plot.