Inaba (written: 稲葉 or 因幡) is a Japanese surname. Notable people with the surname include:

• Akira Inaba (稲葉 陽, born 1988), Japanese shogi player
• Atsuko Inaba (稲葉 貴子, born 1974), Japanese singer
• Atsunori Inaba (稲葉 篤紀, born 1972), Japanese baseball player
• Atsushi Inaba (稲葉 敦志, born 1971), Japanese video game producer and designer
• Carrie Ann Inaba (born 1968), American dancer, choreographer, actress, television host, and singer
• Daiki Inaba (稲葉 大樹, born 1988), Japanese professional wrestler
• Darryl S. Inaba (born 1946), American pharmacologist
• Hideaki Inaba (因幡 英昭, born 1944), Japanese powerlifter
• Hiroshi Inaba (稲葉 博志, born 1948), Japanese bobsledder
• Hisahito Inaba (稲葉 久人, born 1985), Japanese footballer
• Ian Inaba, (born 1971), American film and music video director, producer, and journalist
• Kayo Inaba (稲葉 カヨ), Japanese biologist
• Kazuyo Inaba (稲葉 和世, born 1959), Japanese swimmer
• Kosaku Inaba (稲葉 興作, 1924–2006), Singapore-born Japanese businessman
• Koshi Inaba (稲葉 浩志, born 1964), Japanese vocalist
• Kotaro Inaba (稲葉 洸太郎, born 1982), Japanese futsal player
• Inaba Masaaki (稲葉 正明, 1723–1793), Japanese daimyō
• Inaba Masakatsu (稲葉 正勝, 1597–1634), Japanese daimyō
• Inaba Masakuni (稲葉 正邦, 1834–1898), Japanese daimyō
• Inaba Masami (稲葉 正巳, 1815–1879), Japanese daimyō
• Inaba Masamori (稲葉 正盛, 1791–1820), Japanese daimyō
• Inaba Masanobu (稲葉 正謖, 1749–1806), Japanese daimyō
• Inaba Masao (稲葉 正夫, 1908–1973), Japanese military officer
• Inaba Masanori (稲葉 正則, 1623–1696), Japanese daimyō
• Inaba Masatake (稲葉 正武, 1769–1840), Japanese daimyō
• Inaba Masayasu (稲葉 正休, 1640–1684), Japanese daimyō
• Inaba Masayoshi (稲葉 正善, 1848–1902), Japanese daimyō
• Mayumi Inaba (稲葉 真弓, 1950–2014), Japanese writer and poet
• Minoru Inaba (稲葉 実, born 1951), Japanese voice actor
• Yamato Inaba (稲葉 大和, born 1943), Japanese politician
• Yasuhiro Inaba (稲葉 泰弘, born 1985), Japanese sport wrestler
• Inaba Yoshimichi (稲葉 良通, 1515–1589), Japanese samurai
• Yoshio Inaba (稲葉 義男, 1920–1998), Japanese actor
• Yu Inaba (稲葉 友, born 1993), Japanese actor

Fictional characters

• Inaba, a character from the Japanese manga and anime series Urusei Yatsura
• Inaba Himeko, a character from the Japanese light novel series Kokoro Connect
• Reisen Udongein Inaba and Tewi Inaba, characters from the Touhou Project video games
• Kageroza Inaba, an anime-exclusive character from the 15th season of the Bleach anime, in the Gotei 13 Invading Army arc