Codex Boreelianus, or its full name Codex Boreelianus Rheno-Trajectinus, is a uncial manuscript of the New Testament Gospels in Greek, written on parchment. It is designated by Fe or 09 in the Gregory-Aland numbering of New Testament manuscripts, and ε 86 in the von Soden numbering of New Testament manuscripts. It is full of gaps, many of which arose between 1751 and 1830. The codex was named Boreelianus after Johannes Boreel (1577–1629), who brought it from the East.
The text of the codex represents the majority of the text (Byzantine text-type), but with numerous alien readings (non-Byzantine). Some of its readings do not occur in any other manuscript (so called singular readings). According to the present textual critics its text is not very important, but it is cited in all modern editions of the Greek New Testament.
The manuscript was brought from the East at the beginning of the 17th century. It was in private hands for over 100 years. Since 1830 it has been housed at the Utrecht University.