Reydan is a variant of Ryan, which originated from the Irish name Rian, meaning little king. It has been a popular name in many English-speaking countries, including the United States and the United Kingdom. Reydan is often associated with qualities such as strength, courage, and leadership. In some cultures, it is also linked to the name Ryan, which means little king in Gaelic. Reydan has been in use since the Middle Ages and has been popularized by several notable individuals, including the American actor Ryan Dan.