Recent studies on organic photochemical reactions induced by UV, visible, and IR lasers are briefly reviewed with regard to applications of laser chemistry to organic syntheses. This review describes (1) laser photochemical reactions from the synthetic point of view, (2) single- and multiple-photon processes induced by UV and visible lasers, (3) IR multiple-photon decomposition and selective IR photochemical reactions of organic compounds induced by CO₂ lasers, (4) laser photochemical reactions in solids and on surfaces of solids, and (5) laser photochemical reactions of organometallic compounds.