Rome or Syria? This article addresses the issue of the provenance of Mark's Gospel by exploring affinities between the second Gospel and Jewish sectarian groups of the first centuries bce and ce. It is argued that Mark displays certain sectarian tendencies, and that these tendencies, most notably seen in the Gospel's negative evaluation of the Jerusalem temple and its priestly overseers, strongly suggest that the Gospel was written in close geographical proximity to Jerusalem and its temple. Accordingly, an area in the Syrian Decapolis is a much more likely place of origin for Mark's Gospel than that of Rome.