Mikio (written: , , , , , , , , , in hiragana or in katakana) is a masculine Japanese given name. Notable people with the name include:
*, Japanese politician
*, Japanese comedian
*, Japanese composer, music arranger and producer
*, Japanese politician
*
Mikio Hasemoto (1916–1943), American soldier and Medal of Honor recipient
*, Japanese ice hockey player
*, Japanese manga artist
*, Japanese manga artist
*, Japanese sport shooter
*, Japanese alpine skier
*, Japanese footballer
*, Japanese ice hockey player
* Japanese jurist, educator and politician
*, Japanese actor
*, Japanese film director, screenwriter and producer
*, Japanese athlete
*, Japanese speed skater
*, Japanese singer-songwriter
*, Japanese chief executive
*, Japanese mathematician
*, Japanese politician
*, Japanese keyboardist
*, Japanese karate master
*, Japanese scientist
{{given name
Japanese masculine given names