DIN 31635 is a Deutsches Institut für Normung (DIN) standard for the transliteration of the Arabic alphabet adopted in 1982. It is based on the rules of the Deutsche Morgenländische Gesellschaft (DMG) as modified by the International Orientalist Congress 1935 in Rome. The most important differences from English-based systems were doing away with j, because it stood for /dʒ/ in the English-speaking world and for /j/ in the German-speaking world and the entire absence of digraphs like th, dh, kh, gh, sh. Its acceptance relies less on its official status than on its elegance (one sign for each Arabic letter) and the Geschichte der arabischen Literatur manuscript catalogue of Carl Brockelmann and the dictionary of Hans Wehr. Today it is used in most German-language publications of Arabic and Islamic studies.
- The 28 letters:
|Arabic letters||ء / ا||ب||ت||ث||ج||ح||خ||د||ذ||ر||ز||س||ش||ص||ض||ط||ظ||ع||غ||ف||ق||ك||ل||م||ن||ه||و||ي / ى|
|DIN 31635||ʾ / ā||b||t||ṯ||ǧ||ḥ||ḫ||d||ḏ||r||z||s||š||ṣ||ḍ||ṭ||ẓ||ʿ||ġ||f||q||k||l||m||n||h||w / ū||y / ī|
|ALA-LC||ʼ / ā||th||j||kh||dh||sh||ʻ||gh|
|IPA (MSA)||ʔ, aː||b||t||θ||dʒ
|ʕ||ɣ||f||q||k||l||m||n||h||w, uː||j, iː|
Hamzah has many variants, أ إ ء ئ ؤ; depending on its position, all of them are transliterated as ⟨ʾ⟩. The initial ʾalif (ا) without a hamzah isn't transliterated using ʾ initially, only the initial vowel is transliterated (if pronounced): i-.
(ﻯ) ʾalif maqṣūrah appears as ā, transliterating it indistinguishable from ʾalif. Long vowels /iː/ and /uː/ are transliterated as ī and ū. The nisbah suffix /ij(j), ijja/ appears as -iyy, -iyyah although the former is normally transliterated as -ī, and nunation is ignored in transliteration. A hyphen - is used to separate clitics (the article, the prepositions and the conjunction) from words to which they are attached.
- In Egypt, Sudan and sometimes other regions, the final form is always ى (without dots).
- ى for final /-aː/ is also known as ألف لينة ʾalif layyinah [ˈʔælef læjˈjenæ] "flexible ʾalif".
- Brockelmann, Carl; Ronkel, Philippus Samuel van (1935). Die Transliteration der arabischen Schrift in ihrer Anwendung auf die Hauptliteratursprachen der islamischen Welt: Denkschrift dem 19. internationalen Orientalistenkongreß in Rom (PDF). Leipzig. Reprint (Wiesbaden, 1969)
- Chart of Arabic transliteration systems (non-normative), including DIN 31635, Revision 2.2 (2008-02-25)
- Deutsches Institut für Normung