This research investigates the ways in which firms in the cluster approach the process of internationalization through exploring the influence of business clustering and how it benefits firms in entering foreign markets. The purpose was to understand this process to enable firms to develop successful international strategies to expand in foreign markets. The focus of the study is on the Yarra Valley Wine Industry Cluster, the oldest wine growing region in Victoria, Australia. This research examined of Australian wineries to join together in order to achieve greater competitiveness in collaboration when entering foreign markets due to ever increasing global competition. This paper was an exploratory study that used qualitative information gathered from the case study firms to provide practical framework for the execution of the research using a multiple-case study design. The findings show the following: first, some of the wineries gain their perceptions of the foreign markets from their relationships with, as well as, by the input and suggestions of the distributors, agents, and partners in a particular market, while others seem to distance themselves from their international environments and only focus on serving domestic/local markets exclusively. Second, personal networks play an important role when it comes to the internationalization process of the wineries because they provide access to market knowledge. Third, cooperation among cluster firms plays a very limited role in assisting wineries in foreign market expansion; it has only been of benefit when it came to dealing with local issues. The cluster has played only a minor role, if any, when it comes to the internationalization of the cluster firms. Clustering has been identified as a place where wineries exchange knowledge, and techniques, in regards to wine production, or come together in a joint effort to sort out local issues. However, the cluster does not provide assistance to individual wineries entering international marketplaces. In conclusion there was a distinctive lack of active support and organization from the cluster with regard to the international expansion due to the lack of leadership and joint direction among cluster members. This is where local government could take more proactive role to facilitate better usage of geographical clusters. The findings could improve the company decision-making process. Understanding the advantages and disadvantages of clustering as a means for the future international expansion can be useful in helping to develop international strategies for firms. This would be of great significance to business practitioners because this may have a crucial impact on the competitive advantage of firms in foreign markets. In addition to having significant implications for practice, the investigation has implications for international business research because it provides a better understanding of the role of a cluster in the internationalization.