Abstract This chapter covers the wireless communication in the industrial process control systems. This new communication technology is growing fast in the adoption, and hence various basics and engineering aspects are dealt for better implementation. The basics of the wireless communication and different types of antennas and radios and the standards are dealt in detail. The wireless communication systems are provided in various topologies and architectures, and some of them are discussed with their relative advantages and disadvantages. The topics are further covered with different types of devices and communication subsystems and network configurations. Finally, different types of applications in which the technology is going to be adopted are discussed in detail.