Abstract: A missile detent and release apparatus which is capable of detaining and rapidly releasing a missile in a launch tube when conveying/launching the same, and in particular to an improved missile detent and release apparatus by which the missile is easily detained and rapidly released with only a small amount of force, and by which the missile can be stably detained in the launch tube conveying the missile, which includes a pair of detaining protrusions protruded from one end portion of a missile, a pair of fixing members fixed on an inner surface of a missile launch tube and having a detaining groove into which the detaining protrusion is inserted, with the fixing members being formed in the forwarding direction of the missile, a detaining screw passing through a detaining groove of each fixing member in the forwarding direction of the missile and engaged to a detaining screw hole formed at the center portion of the detaining protrusion for detaining the missile in the forwarding direction of the missile, a re