Kindness is a type of behavior marked by acts of generosity, consideration, rendering assistance or concern for others, without expecting praise or reward in return.

Kindness is a topic of interest in philosophy, religion, and psychology. Kindness was one of the main topics in the Bible. In Book II of Rhetoric, Aristotle defines kindness as "helpfulness towards someone in need, not in return for anything, nor for the advantage of the helper himself, but for that of the person helped". Nietzsche considered kindness and love to be the "most curative herbs and agents in human intercourse". Kindness is considered to be one of the Knightly Virtues. In Meher Baba's teachings, God is synonymous with kindness: "God is so kind that it is impossible to imagine His unbounded kindness!"