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51 (number), LI in Roman numerals •
Li (Confucian), (), a concept of ritual in Confucian philosophy •
Li (Neo-Confucianism), (), a Chinese (Buddhist and Neo-Confucian) philosophical concept: 'reason', 'order', 'principle', 'idea' •
Li (unit) (里), a Chinese unit of length •
Li (short) (厘), a Chinese unit of length •
Li (area) (厘), a Chinese unit of land area •
Li (mass) or
cash (unit) (厘), a Chinese unit of weight •
Li (subdivision) (里), the basic level of administrative subdivisions in the Republic of China •
Li people (黎族), an ethnic group of China •
Li language, or Hlai •
Limburgish language (ISO 639-1 language code li) • Li, an alien character in the 2011 first-person shooter video game
Conduit 2 •
Lawful interception, selective wiretapping of telecommunications by law enforcement agencies == See also ==