Calpis (カルピス, Karupisu), sold in North America as Calpico, is a Japanese non-carbonated soft drink manufactured by Calpis Co., Ltd. (カルピス株式会社, Karupisu Kabushiki-gaisha), a subsidiary of Asahi Breweries headquartered in Shibuya, Tokyo.^[1] The beverage has a light, somewhat milky, and slightly acidic flavour, similar to plain or vanilla-flavoured yogurt or Yakult. Its ingredients include water, dry milk, and lactic acid, and it is produced by lactic acid fermentation.

The drink is sold as a concentrate, which is mixed with water or sometimes milk just before consumption. A pre-diluted version known as Calpis Water (カルピスウォーター, Karupisu Wōtā), or its carbonated variety, known as Calpis Soda (カルピスソーダ, Karupisu Sōda), is also available. It is also used to flavour kakigōri and as a mixer for cocktails and chūhai.