There are many varieties of Arabic (dialects or otherwise) in existence.
Classical Arabic
Classical Arabic (CA), also known as Quranic Arabic or occasionally Mudari Arabic, is the form of the Arabic language used in literary texts from Umayyad and Abbasid times (7th to 9th centuries).
Judeo-Iraqi Arabic
Judeo-Iraqi Arabic (also known as Iraqi Judeo-Arabic and Yahudic) is a variety of Arabic spoken by Iraqi Jews currently or formerly living in Iraq.
Modern Standard Arabic
Modern Standard Arabic (MSA; Arabic: اللغة العربية الفصحى al-lughah al-ʻArabīyah al-fuṣḥá 'the most eloquent Arabic language'), Standard Arabic, or Literary Arabic is the standardized and literary variety of Arabic used in writing and in most formal speech.
Arabic
Arabic (Arabic: العَرَبِيَّة, Al-ʻarabiyyah [ʔalʕaraˈbijːah] or Arabic: عَرَبِيّ ʻarabiyy [ʕaraˈbijː] ) is the Classical Arabic language of the 6th century and its modern descendants, excluding Maltese.
Arabic definite article
Al- (Arabic: ال, also transliterated as el- as pronounced in varieties of Arabic) is the definite article in the Arabic language: a particle (ḥarf) whose function is to render the noun on which it is prefixed definite.
Judeo-Tripolitanian Arabic
Judeo-Tripolitanian Arabic (also known as Tripolitanian Judeo-Arabic, Jewish Tripolitanian-Libyan Arabic, Tripolita'it, Yudi) is a variety of Arabic spoken by Jews formerly living in Libya.
Arabic chat alphabet
It differs from more formal and academic Arabic transliteration systems, as it avoids diacritics by freely using digits and multigraphs for letters that do not exist in the basic Latin script (ASCII).
Arabic name
Arabic names were historically based on a long naming system; most Arabs did not have given/middle/family names, but a full chain of names.
Judeo-Tunisian Arabic
Judeo-Tunisian Arabic is a variety of Tunisian Arabic mainly spoken by Jews living or formerly living in Tunisia.
Nabataean language
The Nabataean language was the Western Aramaic variety spoken by the Nabataeans of the Negev, the east bank of the Jordan River and the Sinai Peninsula.
Old Arabic
Old Arabic is the earliest attested stage of the Arabic language, beginning with the first attestation of personal names in the 9th century BC, and culminating in the codification of Classical Arabic beginning in the 7th century AD.
Baghdad Jewish Arabic
Baghdad Jewish Arabic is the Arabic dialect spoken by the Jews of Baghdad and other towns of Southern Iraq.
Arabic phonology
While many languages have numerous dialects that differ in phonology, the contemporary spoken Arabic language is more properly described as a continuum of varieties.
UN Arabic Language Day
UN Arabic Language Day is observed annually on December 18.
Influence of Arabic on other languages
Arabic has had a great influence on other languages, especially in vocabulary.
Khorasani Arabic
Khorasani Arabic is a dialect of Arabic spoke in Iran.
Arablish
Arablish, a portmanteau combining the words Arabic and English, is a slang term for the phenomenon of code-switching between the two languages and/or macaronically using features of one in the other.