Rabirius (architect)
1st century AD Roman architect

Rabirius was an ancient Roman architect who lived during the 1st and 2nd centuries CE. His designs included the massive Flavian Palace, situated on the Palatine Hill at Rome, and the Alban Villa at present-day Castel Gandolfo, both erected on a commission by his patron, emperor Domitian.
It has been suggested that Rabirius designed the extant Arch of Titus, a commemorative arch located in summa Sacra Via honoring the joint triumph celebrated by Titus and Vespasian marking their successful suppression of the Jewish Revolt in 71 CE.
An even more intriguing suggestion is that if Rabirius was indeed the Flavians' preferred architect, it is conceivable that it was he who designed the most famous Roman building of them all: the Flavian Amphitheatre
Notes
References
Jones, Brian W. (1992). The Emperor Domitian. London: Routledge. ISBN 0-415-10195-6.
“Rabirius (architect)” enters the record as 1st century AD Roman architect. Crown Archives preserves that source wording while asking what Rabirius, architect and century can confirm, complicate or overturn.
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The entry’s evidential value lies in the named roles, institutions and publications that can be tested against primary documentation. The source revision retrieved here is dated Jul 21, 2024. The linked authority identifier is Q3409247. VIAF identifies the subject as 95680824. 1 of 2 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1992.
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This entry incorporates text from “Rabirius (architect)” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.