Cheondogyo (천도교 天道敎, The Religion of the Heavenly Way), is the oldest and still one of the largest new religious movements in Korea. Cheondogyo is unique for several reasons. First, as noted it was the descended from the reorganization of a mass movement, Donghak. Secondly, due to its long association with revolutionary struggle, Cheondogyo is one of the few religions officially recognized in the DPRK, where members are represented by the Cheondoist Chongu Party (천도교청우당, CCP). And the two versions of Cheondogyo continue to function in both place. The religion has also continued to grow in South Korea, with estimates of followers varying from between around 50,000 to 200,000. So any discussion of the contemporary religion must cover both sides, Cheondo and Cheondogyo. Thirdly, Cheondogyo is openly syncretic and as such is an exemplar of the syncretic urge that underlies so many new religious movements (NRMs). This paper’s first section will look at Cheondogyo from all three aspects—as a response to modernity, as a politically significant symbol, and as a syncretic mix. The analysis section sees Cheondogyo from the perspective of two models, the prototype and the constellation.