Kong Fuzi (Chinese: ), more usually Kongzi ( ; lit. 'Master K ng', c. 551 – c. 479 BCE), commonly Latinized as Confucius, was a Chinese philosopher of the Spring and Autumn period who is traditionally considered the paragon of Chinese sages. Confucius's teachings and philosophy underpin East Asian culture and society, and remain influential across China and East Asia to this day. His philosophical teachings, called Confucianism, emphasized personal and governmental morality, correctness of social relationships, justice, kindness, and sincerity, as well as an emphasis on a ruler's duty to their subjects.

Confucius considered himself a transmitter for the values of earlier periods which he claimed had been abandoned in his time. The time immediately following Confucius's life saw a rich diversity of thought, and was a formative period in China's intellectual history. His ideas gained in prominence during the Warring States period, but experienced setback immediately following the Qin conquest. Under Emperor Wu of Han, Confucius's ideas received official sanction, with affiliated works becoming required reading for one of the career paths to officialdom. During the Tang and Song dynasties, Confucianism developed into a system known in the West as Neo-Confucianism, and later as New Confucianism. Confucianism became part of the Chinese social fabric and way of life.

Confucius is traditionally credited with having authored or edited many of the Chinese classic texts, including all of the Five Classics, but modern scholars are cautious of attributing specific assertions to Confucius himself. At least some of the texts and philosophy he taught were already ancient. Aphorisms concerning his teachings were compiled in the Analects, but only many years after his death.

Confucius's principles have commonality with Chinese tradition and belief. With filial piety, he championed strong family loyalty, ancestor veneration, and respect of elders by their children and of husbands by their wives, recommending family as a basis for ideal government. He espoused the Silver Rule: "Do not do unto others what you do not want done to yourself."