Yūtarō (ゆうたろう) is a common Japanese given name for males. The characters used for "taro" (太郎) mean "first son", which is why the name is seen only for males. The "yu" part of the name can use a variety of characters, each of which will change the meaning of the name ("勇" for bravery, "優" for kindness, "悠" and so on).