コプト語訳聖書
コプト語訳聖書は数多くあり、そのうちのいくつかは最古級の聖書翻訳である。いくつかの異なるバージョンが古代になされた。コプト語の4大方言、すなわち、ボハイラ方言（北部）、ファイユーム方言、サイード方言、アクミーム方言、そしてオクシリンコス方言において異なるエディションがある。聖書本文はアレクサンドリア型ギリシア語テクストを用いて翻訳された。
サイード方言は、前イスラム期において最も主要な方言であったが、11世紀以降、ボハイラ方言が台頭し、唯一用いられるようになった。
数多くのコプト語訳聖書の断片が残されている。聖書外典もかなりの数が残っている。その中でも最も重要なのはグノーシス文献のナグ・ハマディ写本である。 コプト語はコプト教会の典礼言語として存続しており、聖書のコプト語版は、その信仰の中核をなしている。
旧約聖書のコプト語諸方言への翻訳は、自然、アレクサンドリア型ギリシア語版（七十人訳聖書）からなされた。そして、福音書や書簡と同時期に翻訳されたことは疑いの余地はない。コプト語版旧約聖書の断片はコプト語のすべての方言において残されている。
サイード方言では、聖書のいくつかの諸書が完全な形で残っている。かなりの数の第一正典および第二正典（２つの知恵の書、エレミヤの手紙、ダニエル書へのギリシア語による補足）がこの方言で残っている。The two main dialects, Sahidic and Bohairic, are the most important for the study of early versions of the New Testament. The Sahidic was the leading dialect in the pre-Islamic period. The earliest Bohairic manuscripts date to the 4th century 
, but most texts come from the 9th century and later.
The collection of manuscripts of Sahidic translations is often designated by cop in academic writing and critical apparatus ("Sa" for "versio Sahidica" in BHS). The first translation into the Sahidic dialect was made at the end of the 2nd century in Upper Egypt, where Greek was less well understood. So the Sahidic is famous for being the first major literary development of the Coptic language, though literary work in the other dialects soon followed. By the ninth century, Sahidic was gradually replaced by neighbouring Bohairic, and disappeared. Knowledge of the Sahidic manuscripts was lost until they were rediscovered in the 18th century. In 1778 Woide issued a prospectus in which he announced his intention of publishing from Oxford manuscripts the fragments of the New Testament "iuxta interpretationem dialecti Superioris Aegypti, quae Thebaidica seu Sahidica appellantur". Another fragments were published in 1884 by Émile Amélineau. Amélineau also edited other fragments in 1886-1888.
Several years later Horner produced a critical edition of the Sahidic New Testament over the period 1911–1924. Horner's edition containing almost every verse of the entire New Testament. The Sahidic translation is a representative of the Alexandrian text-type.
The order of books: Gospels (John, Matthew, Mark, Luke), Pauline epistles (Hebrews between 2 Corinthians and Galatians), Catholic epistles, Acts, Apocalypse.
Omitted verses:
In Luke 4:17 it has textual variant "and opened the book" together with the Greek manuscripts A, B, L, W, Ξ, 33, 892, 1195, 1241, ℓ "547", syr, cop, against variant "and unrolled the book" supported by א, D, K, Δ, Θ, Π, Ψ, "f", "f", 28, 565, 700, 1009, 1010 and many other manuscripts.
In Luke 16:19 the version reads: "There was a rich man, with the name N[in]eue, who clothed himself", This reading has also Greek manuscript Papyrus 75 and two Greek minuscule manuscripts 36 and 37, have a scholion of uncertain date ευρον δε τινες και του πλουσιου εν τισιν αντιγραφοις τουνομα Νινευης λεγομενον.
In John 10,7 it reads ο ποιμην ("shepherd") for η θυρα ("door"). The reading is supported by formula_1 and cop.
In Acts 27:37 it reads "seventy six" (as Codex Vaticanus) for "two hundred seventy six".
In 1 Corinthians 15:47 it reads δευτερος for δευτερος ανθρωπος (as cop).
Some of the more notable manuscripts of the Sahidic are the following.
The Bohairic (dialect of Lower Egypt) translation was made a little later, as the Greek language was more influential in lower (northern) Egypt. Probably, it was made in the beginning of the 3rd century. It was a very literal translation; many Greek words, and even some grammatical forms (e.g. syntactic construction μεν — δε) were incorporated to this translation. For this reason, the Bohairic translation is more helpful in the reconstruction of the early Greek text than any other ancient translation. It should also be noted that the Bohairic translation was influenced by several variables, including the other dialects, primarily Sahidic and Fayyumic. When the patriarchate moved from Alexandria to Cairo in the 11th century, Bohairic was the dominant language of the Coptic church. As the official dialect of the Coptic Orthodox Church, Bohairic seems to enjoy a strong relationship with mainly the other dialects, Egyptian Arabic and—as it was for several centuries—Greek. The text is mainly Alexandrian, somewhat influenced by the Western text-type. The Bohairic translation is designated by cop.
The order of books: Gospels (John, Matthew, Mark, Luke), Pauline epistles (Hebrews between 2 Thess and 1 Tim), Catholic epistles, Acts, and Apocalypse. The Apocalypse is preserved in relatively few manuscripts.
Omitted verses: Matthew 17:21 (some mss); 18:11 (mss); 23:14 (mss); Mark 9:44.46; 11:26 (mss); 15:28 (mss); Luke 17:36; 22:43-44; John 5:4 (mss); 7:53-8:11 (mss); Acts 8:37; 15:34 (mss); 24:7; 28:29; Romans 16:24.
It contains Matthew 12:47; Some manuscripts of the Bohairic version contains verses: 17: 21; 18:11; 23:14; Mark 11:26; 15:28; John 5:4; 7:53-8:11; Acts 15:34;
In Acts 27:37 it reads "one hundred seventy six" for "two hundred seventy six".
The original {Old} Bohairic version is well represented by manuscripts. More than a hundred of manuscripts have survived. All have the last twelve verses of Mark. 
The Bohairic version was employed by Mill for his edition of 1707. It was first published in 1716 by Wilkins, who edited "Novum Testamentum Aegyptium vulgo Copticum". His edition was accompanied with a Latin translation. Horner produced a critical edition of the Bohairic New Testament in 1898-1905. Horner used more than fifty Bohairic manuscripts preserved in that time in the libraries of Europe.
The only survived witnesses of an Akhmimic, and an Fayyumic Versions are in a fragmentary pieces (designated by cop, and cop).
Mark 8:15
In 1 John 5:6 two versions, Sahidic and Bohairic, have textual variant "through water and blood and spirit" supported by the manuscripts: Codex Sinaiticus, Codex Alexandrinus, 104, 424, 614, 1739, 2412, 2495, ℓ "598", syr, Origen. Bart D. Ehrman identified this reading as Orthodox corrupt reading.
More than forty Greek-Coptic diglot manuscripts of the New Testament have survived to the present day.
Lectionaries 1993 and 1605 are trilingual manuscripts: