Paper-based temperature sensors are sensors used as primary sensors for temperature monitoring due to their unique advantageous including portability, disposability, low-cost, and adaptability to human skin. Here, different types of temperature sensors including optical temperature sensors, thermoresistive sensors, and thermoelectric sensors. Also, these sensors were categorized into carbon-based, polymer-based, metal nanomaterial-based and hybrid material-based, which are combination of aforementioned categories. The presented works were critically evaluated in terms of their integration and multifunction, sensitivity and environmentally friendliness. Therefore, this chapter discussed and summarized the material, fabrication, and performance of temperature sensors as well as their typical applications.