Novel organic distributed feedback (DFB) laser has been designed and fabricated, utilizing surface relief grating (SRG) on an azobenzene polymer. Introducing double-layered structure in which an azobenzene polymer layer is located on top of an active polymer layer, DFB lasing was observed by photoexciting the element, and oscillation wavelength was widely tuned by selecting the laser dye and period of SRG structure.