Legalism (Chinese: 法家; pinyin: Fǎjiā) is one of Sima Tan's six schools of thought in Chinese philosophy.
This tradition emphasises practicality, and avoids moral questions. It has been compared to Realpolitik and Machiavelli. It has influenced Taoism and Confucianism, and is still influential today.
Shang Yang (390–338 BC) was a leading reformer of his time. His ideas lay behind legalism.