This study explores the Impact of Dante Alighieri on Italian Language and Literature. Dante Alighieri (1265–1321) profoundly shaped Italian language and literature, earning him the title "Father of the Italian Language." His groundbreaking decision to write The Divine Comedy in the Tuscan vernacular, rather than Latin—the dominant language of literature and scholarship—revolutionized linguistic and literary practices in Italy. At a time when Latin was the language of the educated elite, Dante’s choice to use a local dialect made literature more accessible to ordinary people and elevated vernacular Italian to a respected medium for intellectual and artistic expression. The widespread popularity of The Divine Comedy helped establish the Florentine dialect as the foundation of modern Italian, contributing to its eventual adoption as the standardized language of Italy.