his project aims to create a systematic strategic and tactical approach to the design and allocation of the critical Operating Theater related resources in order to maximize the efficiency of the service provided. The OT capacity planning problem will be focused on devising a dimensioning plan where emergencies, nursing room, OR resources and staff allocation will be taken into account. Due to the nature of the variables involved in this problem, which relies on stochastic processes and a seasonal service demand, it can be defined as a complex multi-objective and stochastic problem. To attain a robust solution, we will be focused on achieving a better throughput of the entire surgery block, but considering other objectives as well, such as policy compliance, financial criteria, patient and staff satisfaction. The method proposed to tackle the problem entails the use of forecasting methods in combination with optimization techniques.