|Centuries:||4th century – 5th century – 6th century|
|Decades:||410s 420s 430s – 440s – 450s 460s 470s|
|Years:||445 446 447 – 448 – 449 450 451|
|448 by topic|
|State leaders – Sovereign states|
|Birth and death categories|
|Births – Deaths|
|Establishment and disestablishment categories|
|Establishments – Disestablishments|
|Ab urbe condita||1201|
|Bahá'í calendar||−1396 – −1395|
|English Regnal year||N/A|
|Chinese calendar||丁亥年 (Fire Pig)
3144 or 3084
— to —
戊子年 (Earth Rat)
3145 or 3085
|- Vikram Samvat||504–505|
|- Shaka Samvat||370–371|
|- Kali Yuga||3549–3550|
|Igbo calendar||−552 – −551|
|Iranian calendar||174 BP – 173 BP|
|Islamic calendar||179 BH – 178 BH|
|Minguo calendar||1464 before ROC
|Thai solar calendar||991|
|Wikimedia Commons has media related to 448.|
Year 448 (CDXLVIII) was a leap year starting on Thursday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Praetextatus and Zeno (or, less frequently, year 1201 Ab urbe condita). The denomination 448 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
- Emperor Theodosius II sends an embassy to Attila the Hun; Anatolius, Roman general (magister militum) and responsible for the security of the Eastern frontier, achieves a peace treaty with the Huns in exchange for an annual tribute of 2,100 pounds of gold per year.
- Attila demands in the treaty the evacuation of the territory running from Singidunum (Belgrade, in Serbia) 300 miles east along the Danube to Novae (Svishtov, in Bulgaria). This depopulated buffer zone deprived the Romans of their natural defensive advantages.
- Flavius Aetius suppresses the Bagaudae in Armorica (Gaul) and defeats the Salian Franks under king Chlodio near Arras (Belgica Secunda); the invaders are stopped around a river-crossing near Vicus Helena.
- Theodosius II orders all non-Christian books burned.
- Rechiar succeeds his father Rechila as king of the Suebi in Galicia (Northern Spain). He marries a daughter of the Visigoth king Theodoric I and converts to Catholicism.
- Kou Qianzhi, Chinese Daoist reformer, dies after having converted emperor Taiwu of Northern Wei and established Daoism as the country's dominant religion. His death presages a revival of Buddhism as China's dominant faith.
- Chlodio, king of the Salian Franks (approximate date)
- Kou Qianzhi, Chinese high official and Daoist (b. 365)
- Rechila, king of the Suebi (approximate date)
- Saint Germanus, bishop of Auxerre (approximate date)
- The End of Empire. Christopher Kelly, 2009. ISBN 978-0-393-33849-2