This paper examines terms and classification of landscape among coast-dwellers who earn a living by exploiting marine resources. It is based on fieldwork conducted from the end of 2009 to the end of 2010 with a group of local Thai coastal dwellers in Bang Khunsai Subdistrict, Ban Laem District in Phetchaburi Province. Data collection involved interviews and observation, especially during fieldwalking in the area with the locals. An analysis of componential meaning and folk taxonomy is applied for this study. Landscape terms reflect the coast-dwellers’ perceptions and classification system of their natural environments and enable us to understand the local ecological knowledge, a crucial knowledge base for management, utilization, and conservation of marine resources. It is also seen as an important part of their cultural heritage.