A Thief of Time is a crime novel by American writer Tony Hillerman, the eighth in the Joe Leaphorn/Jim Chee Navajo Tribal Police series, first published in 1988. It was adapted for television as part of the PBS Mystery! series in 2004.

Anthony Grove Hillerman was an American author of detective novels and nonfiction works, best known for his mystery novels featuring Navajo Nation Police officers Joe Leaphorn and Jim Chee. Several of his works have been adapted for film and television.