Taniguchi (written: 谷口 lit. "valley mouth") is the 92nd most common Japanese surname.[1] Notable people with the surname include:
- Akemi Taniguchi (谷口 明見, born 1937), Japanese Nordic combined skier
- Brian Taniguchi (born 1951), American politician
- Gorō Taniguchi (谷口 悟朗, born 1966), Japanese anime director
- Hiromi Taniguchi (谷口 浩美, born 1960), Japanese long-distance runner
- Hiroyuki Taniguchi (谷口 博之, born 1985), Japanese footballer
- Itaru Taniguchi (谷口 到, born 1984), Japanese rugby union player
- Jiro Taniguchi (谷口 ジロー, 1947–2017), Japanese manga artist
- Kei Taniguchi (谷口 圭, born 1974), Japanese footballer
- Kotaro Taniguchi (谷口 耕太郎, born 1994), Japanese sprinter
- Makoto Taniguchi (谷口 誠, born 1930), Japanese diplomat and academic
- Masaharu Taniguchi (谷口 雅春, 1893–1985), Japanese New Thought leader
- Masami Taniguchi (谷口雅美, born 1976), Japanese volleyball player
- Masatomo Taniguchi (谷口 正朋, born 1946), Japanese basketball player
- Naomi Taniguchi (谷口 尚己), Japanese motorcycle racer
- Nobuteru Taniguchi (谷口 信輝, born 1971), Japanese racing driver
- Noriko Taniguchi (谷口 令子, born 1992), Japanese rugby sevens player
- Norio Taniguchi (谷口 紀男, 1912–1999), Japanese scientist
- Senkichi Taniguchi (谷口 千吉, 1912–2007), Japanese film director and screenwriter
- Shinya Taniguchi (谷口 晋矢, 1981–2013), Japanese swimmer
- Shogo Taniguchi (谷口 彰悟, born 1991), Japanese footballer
- Shuhei Taniguchi (谷口 周平, born 1976), better known as Maybach Taniguchi, Japanese professional wrestler
- Sumiteru Taniguchi (谷口 稜曄, 1929–2017), Japanese atomic bomb survivor and anti-nuclear activist
- Tadatsugu Taniguchi (谷口 維紹, born 1948), Japanese immunologist
- Toru Taniguchi (谷口 徹, born 1968), Japanese golfer
- Yoshio Taniguchi (谷口 吉生, born 1937), Japanese architect
- Yoshirō Taniguchi (谷口 吉郎, 1904–1979), Japanese architect
- Yuki Taniguchi (谷口 由紀, born 1993), Japanese shogi player
- Yukinori Taniguchi (谷口 行規, born 1968), Japanese racing driver, founder of Yuke's
- Yuya Taniguchi (谷口 雄也, born 1992), Japanese baseball player