Yukio is a unisex Japanese given name that has been used for both boys and girls throughout history. It originated from the kanji characters 雪 (yuki) meaning "snow" and 夫 (o) meaning "husband," although its usage has expanded beyond these original meanings. This name has gained international recognition, partly due to its use by notable individuals such as Yukio Mishima, a renowned Japanese writer, and Yukio Aoshima, a famous sumo wrestler. Despite its gender-neutral nature, Yukio is most commonly associated with males in Japan and other countries where this name is known.
"Yukio saw a peak in popularity between 1922 and 1928, with 36 births in 1922 and consistently high numbers thereafter, before declining gradually into the late 1930s."