Phu Yen is one of eight provinces of the South Central Coast region, with much potential for tourism development, especially the advantages of marine tourism. It can be said that local marine tourism is a “late birth” compared to other localities in the region, but the development of Phu Yen marine tourism over the past time has shown a clear orientation in association with spatial planning of coastal areas. The article analyzes the potentials and current status of Phu Yen marine tourism in association with coastal space, thereby clarifying existing problems in the development of local marine tourism space. The paper also offers some solutions to develop Phu Yen marine tourism space. With that goal, the study examined Phu Yen marine tourism resource sites combined with an analysis of the current status of the spatial development of tourism in the local coastal areas. The results have shown many experiences in developing marine tourism associated with coastal space, which requires clear orientation and specific planning.