A73 or A-73 may refer to:
Roads A73 motorway (Netherlands) A73 road, in the UK Quebec Autoroute 73 in Quebec Autovía A-73, a Spanish motorway Bundesautobahn 73, a German motorway also called A 73
Animals A73, an orca more commonly known as Springer (orca)
Other uses Benoni Defense, in the Encyclopaedia of Chess Openings ARM Cortex-A73, a microprocessor Samsung Galaxy A73 5G, an Android smartphone
See also List of highways numbered 73