ABSTRACT A widely accepted view in the scholarship on religious conversion is that converting to a new religion involves a process of biographic reconstruction. However, conversion may also involve a reconstruction of other kinds of pasts. The article presents a study of Iranian immigrants in Denmark who, coming from an Islamic background, converted to Christianity. For these Iranians, conversion did not only entail a reinterpretation of their individual pasts, but also a narrative construction of Iranian history in which Islam plays the role of an alien and contaminating force. For these converts, leaving Islam and embracing Christianity was not seen as the rejection of an Iranian heritage or identity but rather as a way of reconnecting with a pre-Islamic golden age that harbored the essence of authentic Iranian culture. The article explores how conversion to Christianity can be a multifaceted project involving simultaneous and closely intertwined negotiations of both individual biographic and historicalnational pasts.