Okada (written: 岡田 literally "hill rice-paddy") is a Japanese surname. Notable people with the name include:

• Okada Beisanjin (岡田 米山人, 1744–1820), Japanese painter
• Doris Okada Matsui, American politician of the Democratic Party
• Hankō Okada (岡田 半江, 1782–1846), Japanese painter in the Edo period
• Harumitsu Okada (岡田 晴光, born 1960), Japanese cyclist
• Hiroko Okada (岡田 裕子, born 1970), Japanese contemporary artist
• Okada Izō (岡田 以蔵, 1838–1865), Japanese samurai and assassin
• Jisaku Okada (岡田 次作, 1893–1942), IJN Captain
• John Okada (1923–1971), Japanese-American writer
• Junichi Okada (岡田 准一, born 1980), Japanese singer and actor
• Junko Okada (岡田 純子, born 1973), Japanese voice actress
• Katsuya Okada (岡田 克也, born 1953), former Democratic Party of Japan president and foreign minister of Japan
• Kazuchika Okada (岡田 和睦, born 1987), Japanese professional wrestler
• Kazuo Okada (岡田 和生, born 1942), Japanese businessman and billionaire, the biggest project of whom is Okada Manilla (see below)
• Keisuke Okada (岡田 啓介, 1868–1952), 31st Prime Minister of Japan
• Kinya Okada (岡田 欣也, born 1992), Japanese professional wrestler
• Kōyō Okada (岡田 紅陽, 1895–1972), Japanese photographer
• Mari Okada (岡田 麿里, born 1976), Japanese screenwriter
• Masaki Okada (岡田 将生, born 1989), Japanese actor
• Masumi Okada (1935–2006), Japanese-Danish actor
• Mokichi Okada (岡田 茂吉, 1882–1955), founder of the Church of World Messianity
• Nana Okada (岡田 奈々, born 1959), Japanese actress and former idol singer
• Nana Okada (岡田 奈々, born 1997), Japanese idol, model and actress
• Rana Okada (岡田 良菜, born 1991), Japanese snowboarder
• Okada Saburōsuke (岡田 三郎助, 1869–1939), Japanese painter
• Satoru Okada (岡田 智, born 1947), general manager of Nintendo Research & Engineering
• Okada Shigetaka (岡田 重孝, died 1584), Japanese Samurai
• Okada Shinichirō (岡田 信一郎, 1883–1932), Japanese architect
• Shoken Okada (岡田 昌憲, born 1947), Japanese slalom canoeist
• Tadahiko Okada (岡田 忠彦, 1878–1958), Japanese politician
• Tadayuki Okada (岡田 忠之, born 1967), former Grand Prix motorcycle racing and Superbike racing motorcycle racer
• Takeshi Okada (岡田 武史, born 1956), coach of the Japan national football team
• Tasuku Okada (岡田 資, 1890–1949), Japanese general
• Tokihiko Okada (岡田 時彦, 1903–1934), Japanese actor
• Tomohiro Okada (岡田 智博, born 1971), Japanese new media art and design curator
• Toshio Okada (岡田 斗司夫, born 1958), founder of the anime company Gainax
• Ty Okada (born 1999), American football player
• Yaichirō Okada (岡田 彌一郎, 1892–1976), Japanese zoologist
• Yoshiko Okada (岡田 嘉子, 1902–1992), Japanese actress
• Yuki Okada (disambiguation), multiple people
• Yukiko Okada (岡田 有希子, 1967–1986), Japanese idol
• Yusuke Okada (disambiguation), multiple people

Other uses

• Okada Air, a now defunct airline in Nigeria
• Okada Domain, a Japanese domain in the Edo period
• Okada Museum of Art, an art museum in Kanagawa, Japan
• Okada Manila, a casino resort and hotel complex in Parañaque City, Metro Manila which is the biggest project of Kazuo Okada (see above)
• Okada (motorcycle taxi), a motorcycle taxi used in western Africa
• Okada (Nigeria) a Nigerian town
• Okada Station (Ehime), a railway station in Ehime, Japan
• Okada Station (Kagawa), a railway station in Kagawa, Japan