There are many challenges in evaluating international networks. The use of conventional tools can be difficult and often provides less than useful information. Social Network Analysis offers benefits for network evaluators by allowing for documentation and analysis of inter-relationships between individuals and organisations. This paper describes the use of this approach in the evaluation of a major international project entitled the Global Dialogues on Sexual Health and Well-being. It highlights the value of maps in enabling clear visual representations of networks, the identification of areas needing greater focus and the basis on which networks are constructed.