Codex Sangallensis (plural Codices Sangallenses) is the designation of codices housed at the Abbey library of Saint Gall in St. Gallen. The codices are indexed with a continuous Arabic number of up to four digits. Many of the codices have been digitized through the e-codices project in Switzerland, with over 2000 of them freely available online.
Notable Codices Sangallenses include:
- Codex Sangallensis 18 (0130 on the list Gregory-Aland) — fragments of the gospels of Mark and Luke in Greek; 9th century
- Codex Sangallensis 22, the Golden Psalter of St. Gallen
- Codex Sangallensis 48 (037 on the list Gregory-Aland) — four gospels in Greek with only one lacuna; 9th/10th century
- Codex Sangallensis 51 (48 on the list Beuron) — four gospels in Latin; 8th century
- Codex Sangallensis 53 — also known as Evangelium Longum, a book known mostly for its valuable covers.
- Codex Sangallensis 56 — Diatessaron in Latin; 9th century; copy of the Codex Fuldensis
- Codex Sangallensis 63 — manuscript of Vulgate
- Codex Sangallensis 190 — 12 letters of Ruricius
- Codex Sangallensis 381
- Codex Sangallensis 484
- Codex Sangallensis 878 — grammatical texts, including the Ars minor and Ars maior of Aelius Donatus, the grammar of Priscian, the Etymologiae of Isidore of Sevilla and the grammar of Alcuin
- Codex Sangallensis 904 — an Old Irish manuscript on Latin grammar
- Codex Sangallensis 907 — manuscript of Vulgate
- Codex Sangallensis 1395 — the oldest manuscript of Vulgate gospels