João de Barros
Lahir	1496 Viseu, Kerajaan Portugal
Meninggal	20 Oktober 1570(1570-10-20) (umur 73–74) Santiago de Litém, Pombal, Kerajaan Portugal
Pekerjaan	Historian, factor at "Casa da Índia"
Karya terkenal	Decades of Asia, Chronicle of Emperor Clarimund

João de Barros (pengucapan bahasa Portugis: [ʒuˈɐ̃w̃ dɨ ˈbaʁuʃ]) (1496 – 20 Oktober 1570), yang disebut Livy dari Portugis, adalah salah satu sejarawan Portugis besar pertama. Ia dikenal karena membuat Décadas da Ásia ("Dekade-dekade dari Asia"), sebuah catatan sejarah bangsa Portugis di India, Asia, dan tenggara Afrika.

•  Chisholm, Hugh, ed. (1911). "Barros, João de" . Encyclopædia Britannica (Edisi 11). Cambridge University Press.
• Manoel Severim de Faria "Vida de João de Barros", 1778, in vol. 9 of ''Da Ásia de João de Barros e Diogo do Couto, Lisbon.

• Portuguese Site about João de Barros containing information about his life and work - by Bruno Figueiredo Diarsipkan 2019-07-10 di Wayback Machine.
• Barros:Decadas da Ásia … - links to scans of all 4 Barros-written, and most of the other 20 (post-Barros) volumes of Décadas da Ásia. For the first two Décadas, both the original (1553) edition and the "modernized" 1778-1788 edition are available; for the rest, only the latter edition.
• (Portugis) Décadas da Ásia Diarsipkan 2009-09-20 di Wayback Machine. (several chapters, about the early exploration) - nead.unama.br
• (Portugis) Décadas da Ásia (2nd Decade, 1st part) - Google books (Book 1: Tristão da Cunha's expedition to India; Books 2, 3, 4: Alfonso de Albuquerque in the Arabian Sea (Ormuz) and India; Book 5: conquest of Goa)
• (Portugis) Décadas da Ásia (3nd^{[butuh klarifikasi]} Decade, 1st part, Books 1-5) (even though Google Books description mistakenly says this is the 5th Decade!)
• (Portugis) Décadas da Ásia (11th Decade) - Google books
• (Portugis) Partial text of the 3rd Década, Book 2, Chapter VII Diarsipkan 2012-03-26 di Wayback Machine., "in which is described the land of China, and are related certain things of it, and especially of the city of Canton, which Fernão Pires de Andrade has discovered" - one of the earliest European descriptions of the Ming China. Re-typeset in a modern font, with a slightly modernized orthography.