Sen is a unisex given name of Japanese origin, meaning "thousand" or "a thousand". It is often used as an abbreviation for longer names such as Sennosuke, Senjuro, Senichi, and others. In Japanese culture, the number one thousand represents completeness, prosperity, and abundance. Therefore, the name Sen signifies these positive qualities and wishes for the child's future success.
"From 1989 to 2022, the name Sen has seen peaks and valleys in popularity, with an average of around 6 births per year over these periods."