Ikeda Mitsumasa (池田 光政, May 10, 1609 – June 27, 1682) was a Japanese daimyō of the early Edo period.^[1]

His childhood name was Shintarō (新太郎).He was the son of Ikeda Toshitaka with Tsuruhime, daughter of Sakakibara Yasumasa and adopted daughter of Tokugawa Hidetada.^[1]He married Katsuhime, daughter of Honda Tadatoki with Senhime who was daughter of Tokugawa Hidetada with Oeyo and Tokugawa Ieyasu's favorite granddaughter.

• Father: Ikeda Toshitaka (1584-1616)
• Mother: Tsuruhime (d.1672)
• Wife: Katsuhime (1618-1678)
• Concubines:
  • Mizuno Katsunoshin's daughter
  • Okuni no Kata
• Children:
  • Ikeda Tsunamasa by Katsuhime
  • Jiunin married Honda Tadahira by Katsuhime
  • Seigen’in (1636-1717) married Ichijo Norisuke by Katsuhime
  • Daughter married Sakakibara Masafusa by Katsuhime
  • daughter married Nakagawa Hisatsune by Katsuhime
  • Ikeda Masakoto (1645-1700) by Mizuno Katsunoshin's daughter
  • Ikeda Terutoshi (1649-1714) by Okuni no Kata
  • Rokuhime (1645-1680) married Ikeda Yoshisada latre married Takikawa Kazumune by Okuni no Kata
  • Shichihime (1647-1652) by Okuni no Kata
  • Kiyohime (1653-1686) married Mori Moritsuna by Okuni no Kata
  • daughter (1657-1662) by Okuni no Kata

After his father's death in 1616, Mitsumasa inherited his father's domains in Harima Province.^[1]

In 1617, he was transferred to Tottori Domain (325,000 koku) with Inaba Province and Hōki Province as fiefs.^[1]

In 1632, he was transferred to Okayama Domain (315,000 koku) at Bizen. His descendants continued to live at Okayama.^[1]

He was also a Confucian scholar, and was a patron of Kumazawa Banzan, 17th century Confucian scholar.^{[citation needed]}