Philippine Red Cross (PRC) is one of the major suppliers of blood in the country. Blood Centers of the PRC all over the country are having a hard time managing and communicating their data from one blood center to another. Generating monthly reports is also challenging on their part since records are unorganized and data retrieval is time-consuming. To address the issue, the Philippine Red Cross Online Blood Bank Management Information System (PRCOBBMIS) was developed. It is a web-based environment that provides efficient profiling management and retrieval of data. It is a system designed to manage blood stock inquiries online and even through Short Messaging Service (SMS). The system was developed using V-model to lessen errors during the development of the system. PHP programming language was used in the development and MySQl was used for the database tool. Ozeki and Visual C# was used in the integration of SMS into the system. Having been developed using the web architecture, the system provided a more effective networking ability that will help PRC employees in proficiently profiling their donors, keeping their blood stock data updated and generating statistical reports.