The railways of New South Wales, Australia have had many incidents and accidents since their formation in 1831. There are close to 1000 names associated with rail-related deaths in NSW on the walls of the Australian Railway Monument in Werris Creek. Those killed were all employees of various NSW railways. The details below include deaths of employees and the general public.

Part of a railway signalling system, a train stop, trip stop or tripcock is a train protection device that automatically stops a train if it attempts to pass a signal when the signal aspect and operating rules prohibit such movement, or if it attempts to pass at an excessive speed.