Kaj is a unique and timeless name of Scandinavian origin, meaning "keeper of the keys" or "rejoice." It is a strong and masculine name that exudes confidence and leadership qualities. People with the name Kaj are often seen as reliable and trustworthy individuals who possess a natural charm and charisma. Kaj is a name that is both traditional and modern, making it a versatile choice for any child. Overall, Kaj is a name that is sure to leave a lasting impression and make a statement wherever it is heard.