Backstop may refer to:
Sport Backstop (baseball), a screen behind a field's home plate Catcher, a defensive baseball position behind home plate Backstop, a player position in rounders similar to the catcher in baseball Backstop, in the glossary of rowing terms Backstop (shooting), a construction of sand or other materials used to stop and contain bullets, for example at shooting ranges
Fictional characters Back-Stop (G.I. Joe), a fictional character in the G.I. Joe universe Backstop (Transformers), a fictional character in the Transformers: Cybertron animated series and toy line
Other uses Backstop (geology), a tectonic feature Backstopping markets, a financial term related to the use of the Greenspan put Backstop resources, an economic theory Operation Backstop, United Nations Protection Force (UNPROFOR) military plan during the Croatian War of Independence Irish backstop, a familiar name for the concept of a temporary EU/UK common customs area, proposed in the (failed) 2018 draft Brexit withdrawal agreement
See also Buffer stop or bumper, a railway device