Ensuring the dependability requirements is essential for the industrial applications since faults may cause failures whose consequences result in economic losses, environmental damage or hurting people. Therefore, faced from the relevance of topic, this Book proposes a methodology and a discussion about the dependability evaluation of industrial wireless networks on early design phase. The ideas described here can be easily adapted to maintenance and expansion stages of network. The proposal uses graph theory and fault tree formalism to create automatically an analytical model from a given industrial wireless network topology, where the dependability can be evaluated.