A deposition source includes a nozzle member, a vaporizing member, and a connecting member. The nozzle member includes a body portion including at least one first hole formed in a slot hole, a plurality of nozzles coupled to a first surface of the body portion and that eject a deposition material to an outside, and a crucible including at least one second hole overlapping the first hole and coupled to a second surface of the body portion by a fastening member inserted into the first hole and the second hole. The fastening member includes a bolt, a nut, and a washer. The vaporizing member is spaced apart from the nozzle member and stores the deposition material; and the connecting member connects the nozzle member and the vaporizing member. The deposition material moves through the connecting member.