EJ may refer to:
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.
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.
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.
Earl "EJay" Day Jr. (born September 13, 1981) is an American singer and songwriter, who placed tenth during the first season of American Idol.