Nonaka (written: 野中 literally "in the middle of a field") is a Japanese surname. Notable people with the surname include:
Ai Nonaka (野中 藍) (born 1981), Japanese voice actress
Emi Nonaka (野中 絵美) (born 1984), Japanese ice hockey player
Hiromu Nonaka (野中 広務) (born 1925), Japanese politician
Ikujiro Nonaka (野中 郁次郎) (born 1935), Japanese writer and business theorist
Kingo Nonaka (born 1889), Mexican combat medic and photographer
Masahiro Nonaka (野中 政宏) (born 1968), Japanese voice actor
Shigeru Nonaka (born 1970), Japanese golfer
Tomoyo Nonaka (野中 ともよ) (born 1954), Japanese television personality and chief executive
Tori Nonaka, American sport shooter
