The present paper refers to coastal tourism. The aim is to investigate the conditions for the development of circular sustainable coastal tourism and the opinion of tourists/visitors on related issues. As a case study, the area of "Nestos Delta, Keramoti Lagoon and Thasopoula Island" in the Region of Eastern Macedonia - Thrace is chosen. First of all, it is noted that from all the alternative forms of tourism development, sufficient material resources flow into local communities. Given the multiple islands and the extensive coastal zone of Greece, the issues of coastal tourism are of increased interest, since they contribute a large percentage to the Greek tourism economy. Coastal tourism already contributes to a large extent to job creation and local development, especially in remote areas and with limited economic activity, such as that of the case study. Next, the concept of circular coastal tourism is clarified, which is an alternative form of tourism with high potential for development and employment, covering the context of national strategic development (as formulated by experts on the issues of alternative forms of tourism). Questions are raised regarding scientific issues and the relationship of circular tourism as a special form of controlled tourist development in the area in question. There is evidence that almost all areas that are partially on the coast or are in close proximity to the sea, are directly affected by coastal tourism. In order to answer the main questions of the paper and to investigate the conditions and possibilities for the development of circular coastal tourism in the region, a survey was carried out aimed at tourists/visitors in the region. For the needs of the research, a questionnaire was created composed of twenty-two (22) closed-type structured response questions, which was anonymous and distributed to 180 people. The survey was carried out in the months of July, August and September 2022.