Takagi may refer to:
- People
Takagi is a common surname in Japan, meaning "tall tree" in Japanese
- Akimitsu Takagi (1920–1995), a Japanese crime fiction writer
- Hitoshi Takagi (1925–2004), a Japanese voice actor
- Kaietsu Takagi (1883–1957), a photographer
- Kazumichi Takagi (born 1980), a Japanese football player
- Maria Takagi (born 1978), a Japanese former AV star who is now a TV actress
- Mototeru Takagi (1941–2002), a Japanese free jazz musician
- Sadao Takagi, a Japanese entomologist
- Takeo Takagi (1882–1944), a Japanese vice admiral in WWII
- Takuya Takagi, a Japanese former football player and a current football manager
- Teiji Takagi (1875–1960), a Japanese mathematician
- Toranosuke Takagi (born 1974), a Japanese race car driver
- Wataru Takagi (born 1966), a Japanese voice actor
- Place
- Takagi, Nagano, a village in Nagano Prefecture