On Time Travel: Three Case Studies in Effects and Cause was a book written by James T. Kirk and published by the Starfleet Institute Press. It was read by Cadets and others studying at Starfleet Academy. The book was one of Miles O'Brien's favorites.

In 2374, Nog obtained a hardcopy of On Time Travel: Three Case Studies in Effects and Cause and planned to give it to Benjamin Sisko. (DS9 novel: Inferno)