During the last decade various laser spectroscopic techniques have shown great potential for combustion diagnostics. The largest advantages with these techniques are that they permit non-intrusive measurements with high spatial, temporal and spectral resolution. The most important parameters measurable are; species concentration, temperature and velocity. In the present review some developments and applications will be briefly described. This includes Laser-Induced Fluorescence, LIF, Coherent anti-Stokes Raman Scattering, CARS, and Polarization spectroscopy, PS