Cloud computing is transforming the way enterprises purchase and manage computing resources, on the one hand and increasing robustness, scalability and security aspects (Gartner, 2012), on the other hand. Recently, providers have been moving towards multi-clouds, inter-cloud or cloud-of-clouds environments. Multi-cloud computing promised to support very large-scale, worldwide, distributed applications using multiple and independent cloud environments. However, multi-cloud computing has to face several key challenges such as interoperability, portability, provisioning, elasticity, high availability and security. These challenges increase the call for security governance in such environments. Even though some researches have been achieved in the multi-cloud security field, it is necessary to assess the current state of research and practice its security governance. This paper aims to categorize the existing works about related to the security governance in multi-cloud environments by applying a systematic mapping study methodology in order to identify trends and future directions. Our results prove that multi-clouds security governance seems to be a promising area in the multi-cloud research and evaluation.