Themelo (Greek: Θέμελο, before 1927: Ταμπάνια - Tampania) is a village and a community in the municipal unit of Fanari in the Preveza regional unit in the region of Epirus, in western Greece. The community includes the village Dikorfo.

Population

Year	Village population	Community population
1981	-	447
1991	373	-
2001	322	404
2011	216	302
2021	190	256