This research work called noise pollution evaluation in the main recreational nightlife centers of Morales City, San Martin province, San Martin Region, it was developed with the objective of evaluating the noise pollution in the main recreational nightlife centers of Morales city. The type of research is applied, given to the type of information that is presented in the report, will serve to get an idea of the current situation of Morales district in the sampling points (Recreational Centers at night), and to provide with knowledge of a systematic and methodical manner, for which have been developed tables and graphs. Found a total of five (05) sampling points of assessment in Morales city which were "Discotheque The Mega-Station", "the farm tourist recreation and Disco", "Disco Bunker Space", "Disco Anaconda" and "Video Corner Pub of the 80 'th", that have been evaluated with the sound...