These two datasets are the first born-digital, normalized, peer-reviewed datasets of Harnack’s classic reconstruction of Marcion’s <em>Gospel</em>. The first consists of human-readable postclassical Greek, the second of lemmatized and morphologically tagged text following the openly licensed BibleWorks Greek Morphology schema. The recent deluge of critical editions of Marcion’s <em>Gospel</em> makes Harnack’s public domain work even more relevant as scholars turn from theology- to text-based approaches to restore Marcion’s <em>Gospel</em> and account for its place in the editorial history of early canonical and non-canonical Gospels. These datasets resource Marcion’s <em>Gospel</em> becoming a major topic of interest in Computational Linguistics research.