Tempus is the name of a fictional drug in multiple works of science fiction:
- Robert A. Heinlein's novel The Puppet Masters
- Alexei Panshin's novel How Can We Sink When We Can Fly?
- S. C. Fredericks. "On Alexei Panshin and Heinlein Criticism." 'Science Fiction Studies. Vol. 4, No. 2 (Jul., 1977), pp. 212-215