This review paper focuses on the recent developments in theoretical and experimental research studies carried out to examine the electrical conductivity of different types of nanofluids. Based on it, various parameters that affect the electrical conductivity of nanofluids, namely the structure/shape and size of nanomaterials, temperature, preparation methods, instruments, surfactant, and volume concentration has been studied. It was found that the rise in volume fraction and the temperature of nanomaterials generally led to increment in electrical conductivity of all nanofluids.