Operation management strategies have evolved from individual firms to clients and suppliers along the supply chain management. Concomitantly, the use of information technology, outsourcing and globalization has increased the complexity of these chains which have been recognized as supply networks. The aim of this study is presenting the supply network complexity, which are networks in which are involved products of high complexity encompassing global suppliers and clients as well. For this purpose, we performed a study about the theme and also presented a successful case related to the management of such network complexity in a Brazilian aeronautic industry.