Rei

Rei can refer to:

• Rei 例, meaning "an example" or "for example"
• Rei 令, an order or edict, such as Tokugawa Tsunayoshi's Shôrui Awaremi no Rei, or the Meiji government's Haitô rei
• Rei 礼 or 禮 (C: lǐ), the Confucian concept of ritual propriety, often translated as "rites" or "etiquette".
• Rei 霊, a spirit or ghost, as in yûrei or onryô