Tongpan is a 1977 Thai 16 mm black-and-white docudrama that re-creates a seminar that took place in Northeast Thailand in 1975 to discuss the proposed Pa-Mong Dam on the Mekong. Interwoven are sequences depicting a poor farmer, Tongpan, who had lost his land to another dam some years before, and his struggles to make ends meet.
| Actor | Role |
|---|---|
| OOng-art PonethonTongpan | Tongpan |
| PPhomhom PilasombatTongpan's Wife | Tongpan's Wife |
| RRuengyos SrisorodsakulCollege Student | College Student |
| KKhamsing SrinawkAcademic at Seminar | Academic at Seminar |
| SSane ChamarikSpeaker at Seminar | Speaker at Seminar |
| PPeter BellHydro-electricity Expert at Seminar | Hydro-electricity Expert at Seminar |
| SSulak SivaraksaSeminar Participant | Seminar Participant |
| SSurachai ChantimatornMinstrel | Minstrel |