Kuromitsu (黒蜜, literally "black honey") is a Japanese sugar syrup. It is similar to molasses, but thinner and milder.

It is typically made from unrefined kokutō (muscovado sugar), and is a central ingredient in many Japanese sweets. It is one of the ingredients used in making wagashi, and is eaten with kuzumochi, fruit, ice cream, and other confectionery.