 Discussions of the nature of time, and of various issues related to time, have always featured prominently in philosophy, but they have been especially important since the beginning of the twentieth century. This article contains a brief overview of some of the main topics in the philosophy of time—(1) fatalism; (2) reductionism and Platonism with respect to time; (3) the topology of time; (4) McTaggart’s argument; (5) the A-theory and the B-theory; (6) presentism, eternalism, and the growing block theory; (7) the 3D/4D debate about persistence; (8) the dynamic and the static theory; (9) the moving spotlight theory; (10) time travel; (11) time and physics and (12) time and rationality. We include some suggestions for further reading on each topic and a bibliography.