Thailand's tourism data is split across several official systems. Use Ministry of Tourism and Sports statistics for arrivals and sector totals, Tourism Authority of Thailand data for visitor-facing places and routes, and Department of National Parks datasets for protected-area visits and access context.
Ministry and TAT statistical publications are the right starting point for international arrivals, domestic travel, surveys and tourism-sector summaries. Record the reporting period and whether a table counts people, trips, rooms or establishments before comparing figures.
TAT developer surfaces describe attractions, events, routes, accommodation and tourism services. These records can support discovery and place context, but they are not live room inventory, ticket availability or proof that an attraction is open today.
Department of National Parks datasets add attraction, fee and visitor context for protected areas. Seasonal closures and operational restrictions can change, so use the current park announcement—not an old dataset row—before travelling.