Sen no Rikyū, also known simply as Rikyū, is considered the historical figure with the most profound influence on chanoyu, the Japanese "Way of Tea", particularly the tradition of wabi-cha. He was also the first to emphasize several key aspects of the ceremony, including rustic simplicity, directness of approach and honesty of self. Originating from the Sengoku period and the Azuchi–Momoyama period, these aspects of the tea ceremony persist. Rikyū is known by many names; for consistency, he will be referred to as Rikyū in this article.
There are three iemoto, or 'head houses' of the Japanese Way of Tea, that are directly descended from Rikyū: the Omotesenke, Urasenke, and Mushakōjisenke, all three of which are dedicated to passing forward the teachings of their mutual family founder, Rikyū.