Addai (given name)

{{Infobox Given Name Revised|name=Addai|pronunciation={{ubl|{{IPA|syc|ʔaddaj|lang}}, {{IPA|aii|ʔaːdiː|lang}}}}|gender=Masculine|meaning=Thaddeus|origin=Classical Syriac: ܐܕܝ (Addai)|alternative spelling=|nickname=}}

Addai ({{Langx|syr|ܐܕܝ}}) is a Syriac given name, equivalent to the Greek and Latin Thaddeus ({{Langx|el|Θαδδαῖος}}).{{Cite web |last=Ramelli |first=Ilaria |title=Addai |url=https://doi.org/10.1163/2589-7993_eeco_sim_00000050 |access-date=2025-04-12 |website=Brill Encyclopedia of Early Christianity Online}} It may refer to:

• Addai I, also known as Thaddeus of Edessa (1st/2nd century AD), saint and evangelist of Edessa
• Addai II Giwargis, patriarch of the Ancient Church of the East since 1970
• Addai Scher (1867–1915), the Chaldean Catholic archbishop of Siirt