Qoheleth (37): Ecclesiastes is the greek translation of this, which in English means "preacher" or "a congregation". The author of Ecclesiastes.
Qorban (47): A gift devoted to God. (Mark 7:11) A gift consecrated for religious purposes. Was also used as an oath.
Quelle (44): German for "source". The hypothesized second source (in addition to Mark) for Matthew and Luke.
Qumran documents (41): Dead Sea scrolls