EP3 may refer to:
Music EP3 (Basement Jaxx EP) EP3 (Kleptones EP) EP3 (Pixies EP) EP3 (Ringo Starr EP)
Photography Olympus PEN E-P3, a digital camera
Science Procyclin EP3, a trypanosome procyclin protein Prostaglandin EP3 receptor
Transportation Lockheed EP-3, an electronic surveillance turboprop aircraft Milwaukee Road class EP-3, a U.S. electric locomotive used by the railway operator Milwaukee Road 1919-1957 PKP class EP03, a Swedish electric locomotive used by the Polish railway operator PKP EP3, the chassis code for the 2001-2005 Civic Si and Type R; see Honda Civic (seventh generation)
See also Episode 3 (disambiguation) III (Orbital EP)