Radiant is a science fiction novel by the Canadian author James Alan Gardner. It was published in 2004 by HarperCollins Publishers under their Eos Books imprint. It is the seventh novel in Gardner's "League of Peoples" series. Like the six preceding novels, Radiant is set in the middle of the 25th century; like most of them, it takes place in outer space and on alien planets, and features the continuing character Festina Ramos.