Tada is a Japanese surname. It has also been used as a given name. Notable people with the name include:

Surname

• Akifumi Tada (born 1964), Japanese anime music composer and video game composer
• Aoi Tada (born 1981), Japanese singer and voice actress
• Asami Tada (born 1988), Japanese gravure idol
• Chimako Tada (1930–2003), Japanese poet
• Daisuke Tada (born 1982), Japanese football goalkeeper
• Etsuko Tada (born 1989), Japanese professional boxer
• Hayao Tada (1882–1948), general in the Imperial Japanese Army in the Second Sino-Japanese War
• Hiroshi Tada (born 1929), Japanese aikido teacher
• Hiroshi Tada (performer), performer of a Japanese style of top spinning known as koma-mawashi
• Joni Eareckson Tada (born 1949) American, author, radio host, and evangelical Christian
• Kaoru Tada (1960–1999), Japanese manga artist
• Kageyoshi Tada (died 1950), Japanese physician
• Kenzo Tada (1889–a. 1930), Japanese dirt track motorcycle racer
• Tada Kasuke (died 1687), Japanese farmer and rebel
• Tada Mitsuyori (1501–1563), Japanese samurai of the Sengoku period
• Osamu Tada (多田 修, born 1935), Japanese alpine skier
• Ryosuke Tada (born 1992), Japanese football defender
• Seigo Tada (1922–1997), founder of Goju-Ryu Seigokan Karatedo
• Takayuki Tada (born 1988), Japanese football midfielder

Given name

• Tada Keelalay (born 1984), Thai football defender