Minuscule 124 is a Greek minuscule manuscript of the New Testament, written on parchment. It is designated by the siglum 124 in the Gregory-Aland numbering of New Testament manuscripts, and ε 1211 in the Von Soden numbering of New Testament manuscripts. Using the study of comparative writings styles (palaeography), it has been assigned to the 11th century. It has marginalia and liturgical matter (see below).

Readings from the manuscript are cited in editions of the Novum Testamentum Graece, a critical edition of the Greek New Testament. It is considered to be a member of a group of minuscule manuscripts known as Family 13 (ƒ¹³).

The manuscript is a codex (precursor to the modern book), containing the text of the four Gospels written on 188 thick parchment leaves, sized 21.7 by 18.8 cm. The text is written in two columns per page, with 25-28 lines per page. The initial letters of the different sections are written in red and blue ink, with the initial letters of each gospel being written in red, blue, brown, and green ink. It was corrected by the first hand.

The text is divided according to the chapters (known as κεφαλαια / kephalaia), whose numbers are given in the margin, with the chapter titles (known as τιτλοι / titloi) written at the top of the pages. There is also a division according to the smaller Ammonian Sections (an early division of the Gospels), with references to the Eusebian Canons written below the Ammonian Section numbers, along with information on parallel passages in other gospels written at the bottom.

It contains the Epistle to Carpianus (a letter from the early church father Eusebius of Caesarea outlining his gospel harmony system, his chapter divisions of the four gospels, and their purpose), the Eusebian Canon tables (list of chapters) at the beginning, lists of the tables of contents (also known as κεφαλαια) before each Gospel, subscriptions (end titles) at the close of each Gospel, and the liturgical books with hagiographies known as the synaxaria (a list of saint's days) and the Menologion (a reference list of monthly readings from the gospels).

According to the colophons at the end of their respective gospels, the Gospel of Matthew was written in Hebrew 8 years after the Lord's Ascension, that of Mark was written in Latin 10 years after the Ascension, Luke, in Greek, 15 years after, and John 32 years after. The colophons also state that Matthew has 2522 phrases (known as ῥήματα / rhemata), and 2560 lines (known as στίχοι / stichoi); Mark has 1675 phrases and 1604 lines; Luke has 3803 phrases and 2750 lines; and John has 1938 phrases.

Though containing the text of the Gospels, a binder has muddled up the folia, causing Matthew 18:25-23:35 to be placed after Matt 8:3, Mark 9:39-13:34 to be placed between John 14:18-19, and Luke 23:31-24:28 to be after Matt 23:35 before it returns to Matt 8:4, resulting in several issues of pagination.

The manuscript is considered to belong to the textual family known as the Ferrar Group or Family 13 (ƒ¹³). Readings from the codex and minuscule 69 were noted by Herman Treschow, a Professor of Theology at the University of Copenhagen, in 1773 in his publication, Tentamen descriptionis Codicum Veterum Graecorum Novi Foederis, to which William Hugh Ferrar, Professor of Latin at the University of Dublin, compared the texts of minuscule 13, minuscule 69, minuscule 124, and minuscule 346 in the Gospels, and discovered a new textual-family group. This comparison was published after Ferrar's early death by his friend, T. K. Abbot, in 1887 as A Collation of Four Important Manuscripts of the Gospels. Further manuscripts of ƒ¹³ would be identified, and biblical scholars Kirsopp Lake and Silva Lake would categorise them into three sub-groups, a, b, and c, with minuscule 124 coming under group b alongside the minuscules 69, 174, and 788, with the minuscules in the group being the closest to each other in the Gospel of Mark, as opposed to other ƒ¹³ manuscripts.