Line of sight (adjectival form line-of-sight) may refer to:

Common meanings

* Sightline, an unobstructed line-of-sight between a subject and object * Line of sight (gaming), visibility on a gaming field, ''i.e.'' who can see what

Arts and entertainment

* ''Line of Sight: Vietnam'', a video game * "Line of Sight", a song by Odesza from ''A Moment Apart''

Science and technology

* Line-of-sight (missile), the straight line between the missile and the target * Line-of-sight propagation, electro-magnetic waves travelling in a straight line * Direct fire or line-of-sight fire, shooting directly at a visible target on a relatively flat trajectory * Radial velocity or line-of-sight velocity, an object's speed straight towards or away from an observer * Leonardo da Vinci's term for a structure within the human eye, according to eye movement in reading * Line-of-sight double star, one in which two stars are only coincidentally close together as seen from Earth {{disambiguation