Sanada is a Japanese surname. Notable people with the surname include:

• Asami Sanada (born 1977), Japanese voice actress
• Ayako Sanada (真田 彩子, born 1972), Japanese shogi player
• Juzo Sanada (1923–1994), Japanese baseball player
• Hiroki Sanada (born 1984), Japanese baseball player
• Hiroyuki Sanada (born 1960), Japanese actor
• Joichiro Sanada (1897–1957), Japanese general
• Keiichi Sanada, professional shogi player
• Masanori Sanada (1968–2011), Japanese football player
• Sanada (wrestler) (Seiya Sanada, born 1988), Japanese professional wrestler
• Takashi Sanada (born 1985), Japanese tennis player

• Sanada clan, Japanese clan from the 16th century
• Sanada Masayuki (1547–1611), Japanese lord
• Sanada Nobutsuna (1537–1575), Japanese samurai
• Sanada Nobuyuki (1566–1658), Japanese samurai
• Sanada Komatsu (1573–1620), wife of Sanada Nobuyuki
• Sanada Yukimura (1567–1615), Japanese samurai
• Sanada Chikurin-in (1579–1649), wife of Sanada Yukimura
• Sanada Yukinori (真田 幸教, 1836–1869), Japanese daimyō
• Sanada Yukitaka (1512–1574), Japanese samurai

• Akihiko Sanada, character in Persona 3 video game
• Kojiroh Sanada, character in The Last Blade video game
• Sheoke Sanada, Japanese supervillain in the Marvel Comics Universe
• Yukariko Sanada, minor character in My-HiME manga series
• Ryo Sanada, one of the main protagonists in Ronin Warriors

• Sanada, Nagano, a former town in Chiisagata District, Nagano Prefecture, Japan
• Sanada Ten Braves, group of ninja