EJ may refer to:
Ejaculation is the discharge of semen (normally containing sperm) from the male reproductory tract, usually accompanied by orgasm.
Erik Rodriguez "E.J." Manuel Jr. (born March 19, 1990) is an American football quarterback for the Oakland Raiders of the National Football League (NFL).
In aircraft, an ejection seat or ejector seat is a system designed to rescue the pilot or other crew of an aircraft (usually military) in an emergency.
EJ DiMera is a fictional character from the original NBC Daytime soap opera, Days of Our Lives, portrayed by James Scott.
In sports, an ejection (also known as dismissal, sending-off, or disqualification) is the removal of a participant from a contest due to a violation of the sport's rules.
An ejection fraction (EF) is the fraction of blood ejected from a ventricle of the heart with each heartbeat.
In phonetics, ejective consonants are usually voiceless consonants that are pronounced with a glottalic egressive airstream.
Earl "EJay" Day Jr. (born September 13, 1981) is an American singer and songwriter, who placed tenth during the first season of American Idol.
The system of Ejes viales (singular: eje vial, lit. "road axis") in Mexico City is a large network of wide arterial roads with coordinated traffic signals.