Under the Triple Suns is a science fiction novel by American writer Stanton A. Coblentz.

The novel concerns the survivors of the destruction of the earth and their attempt at settling a new planet.

Galaxy reviewer Groff Conklin panned the novel, saying "it has nothing new or even interesting to offer.

"[1] Anthony Boucher found the novel "sounds exactly like one of [Coblentz's] first science-fantasies back in 1928 .

"[2] P. Schuyler Miller found the novel marked by "heavy-handed satire" that "bludgeoned" the reader.