Basilica di Santa Tecla was a former, paleo-Christian basilica church in Milan, region of Lombardy, Italy. It was originally established in 350 and demolished in 1458. Remnants of the structure have been excavated underneath the Milan Cathedral.

You can help expand this article with text translated from the corresponding article in Italian. (April 2011) Click [show] for important translation instructions. View a machine-translated version of the Italian article. Machine translation, like DeepL or Google Translate, is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the English Wikipedia. Do not translate text that appears unreliable or low-quality. If possible, verify the text with references provided in the foreign-language article. You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation. A model attribution edit summary is Content in this edit is translated from the existing Italian Wikipedia article at [[:it:Basilica di Santa Tecla]]; see its history for attribution. You should also add the template {{Translated|it|Basilica di Santa Tecla}} to the talk page. For more guidance, see Wikipedia:Translation.

According to a number of historians the construction of the Basilica was ordered by Roman Emperor Constans in 345 under the name Basilica Maior. It was then founded in 350.^[1]

• Early Christian churches in Milan