Hangfire is the sixth novel of the military science fiction StarFist Saga by American writers David Sherman and Dan Cragg.

Instead of vacationing he travels to Marine Corps Headquarters on Earth to find out why 34th FIST seems to have been quietly "quarantined," with nobody being rotated out of the unit, even though it is considered a hardship post.

As this happens, the Skinks, an extraterrestrial enemy previously fought by the Marines, land on a world only partially explored by humans and find a pre-technological sentient race.

Don D'Amassa in his review for Science Fiction Chronicle said "the previous volumes in this series have been readable, and this one was divergent enough that it actually held my interest throughout.

"[1] Author Colin Salt gave it a negative review, however, ranking it as "one of the lower entries in the wildly uneven Starfist series", justifying it primarily by saying that "What should be a romp through Mobster Murderworld ends up treating that tamely while devoting a ton of time and space to uninteresting aliens [...] to set up an uninteresting arc".