The detection of specific proteins, as biomarkers of disease, health status, environmental monitoring, food quality, control of fermenters and civil defence purposes means that biosensors for these targets will become increasing more important. Among the technologies used for building specific recognition properties, molecularly imprinted polymers, molecularly imprinted polymers (MIPs) are attracting much attention. In this critical review we describe many of methods used for imprinting recognition for protein targets in polymers and their incorporation with a number of transducer platforms with the aim of identifying the most promising approaches for the preparation of MIP-based protein sensors.2