Akio (written: 昭雄, 昭夫, 昭生, 昭男, 明雄, 明夫, 明生, 章雄, 章夫, 章男, 章央, 彰朗, 彰生, 秋雄, 秋夫, 秋男, 陽生, 晶夫 or あきお in hiragana) is a masculine Japanese given name. Notable people with the name include:

• Akio Arakawa (1927–2021), Japanese-American climate scientist
• Akio Chen (born 1956), Taiwanese actor
• Akio Chiba (ちば あきお, 1943–1984), Japanese manga artist
• Akio Fukuda (福田 昭夫, born 1948), Japanese politician
• Akio Hattori (服部 晶夫, 1929–2013), Japanese mathematician
• Akio Hong (born 1969), Chinese travel writer, broadcaster, television host, and columnist
• Akio Inoue (井上 秋緒), Japanese lyricist
• Akio Ishii (石井 昭男, born 1955), Japanese baseball player
• Akio Ishikawa (石川 陽生, born 1964), Japanese shogi player
• Akio Jissoji (実相寺 昭雄, 1937–2006), Japanese television and film director
• Akio Kakishita (柿下 秋男, born 1953), Japanese rower
• Akio Kaminaga (神永 昭夫, 1936–1993), Japanese judoka
• Akio Kanai (金井 昭雄, born 1942), Japanese optometrist
• Akio Kanemoto (born 1945), Japanese golfer
• Akio Kashiwagi (柏木 昭男, 1938–1992), Japanese businessman and murder victim
• Akio Katayama (片山 章雄, born 1957), Japanese historian
• Akio Kogiku (小菊 昭雄, born 1975), Japanese football manager
• Akio Koizumi (小泉 昭男, born 1945), Japanese politician
• Akio Kudo (born 1947), Japanese field hockey player
• Akio Kuwazawa (桑沢 秋雄, born 1959), Japanese cyclist
• Akio Matsuba (松場 秋夫, born 1914), Japanese naval aviator
• Akio Mimura (三村 明夫, born 1940), Japanese businessman
• Akio Minakami (born 1948), Japanese karateka
• Akio Miyazawa (宮沢 章夫, 1956–2022), Japanese playwright, writer, and academic
• Akio Mizuta (水田 章雄, born 1973), Japanese baseball player
• Akio Mori (森 昭雄, born 1947), Japanese physiologist and writer
• Akio Morimoto (森本晃生, born 1960), Japanese racing driver
• Akio Morita (盛田 昭夫, 1921–1999), Japanese businessman
• Akio Johnson Mutek (1958–2013), South Sudanese Roman Catholic bishop
• Akio Nakamori (中森 明夫, born 1960), Japanese writer
• Akio Nohira (野平 明雄, 1937–2015), Japanese table tennis player
• Akio Nojima (野島 昭生, born 1945), Japanese voice actor, actor and narrator
• Akio Ohta (born 1984), Japanese speed skater
• Akio Ōtsuka (大塚 明夫, born 1959), Japanese actor and voice actor
• Akio Saito (斉藤 明雄, born 1955), Japanese baseball player
• Akio Sasajima (笹島 明夫, born 1952), Japanese jazz guitarist
• Akio Sasaki (佐々木 彰生, born 1991), Japanese figure skater
• Akio Sato (disambiguation), multiple people
• Akio Shibata (柴田 明雄, born 1981), Japanese boxer
• Akio Sohda (左右田 秋雄, 1909–?), Japanese field hockey player
• Akio Sugino (杉野 昭夫, born 1944), Japanese character designer
• Akio Suyama (陶山 章央, born 1968), Japanese voice actor
• Akio Suzuki (鈴木 章夫, 1929–2010), Japanese surgeon, medical scientist and educator
• Akio Takamori (1950–2017), Japanese-American sculptor
• Akio Takashima (born 1942), Japanese field hockey player
• Akio Tamashiro, Peruvian karateka
• Akio Toyoda (豊田 章男, born 1956), president and CEO of Toyota Motor Corporation
• Tsurugamine Akio (鶴ヶ嶺 昭男, 1929–2006), Japanese sumo wrestler
• Akio Usami (宇佐美 彰朗, born 1943), Japanese long-distance runner
• Akio Watanabe (渡辺 明夫, born 1969), Japanese animator
• Akio Yashiro (矢代 秋雄, 1929–1976), Japanese composer
• Akio Yasuraoka (安良岡 章夫, born 1958), Japanese classical composer
• Akio Yoshida (吉田 明生, born 1986), Japanese footballer