Abstract: The invention relates to a method of manufacturing a thermoelectric device (10), in particular a thermoelectric generator (10), comprising a flexible foil (1) on which two groups (2, 3) of series-connected strip-shaped parts (2A, 3A) are formed, where the materials chosen for the two groups of parts (2A, 3A) are materials with a different thermoelectric coefficient and said two groups of parts are formed in a pattern (100) such that the connections (4) between one part (2A) of one group (2) and another part (3A) of the other group (3) are alternately positioned in two spaced apart areas (G1, G2) of the foil (1), and after the formation of the parts (2A, 3A) on a substrate (5), the foil (1) is attached to the stripshaped parts (2A, 3A), after which the substrate (5) is removed.