Princess Indrasakdi Sachi (Thai: อินทรศักดิศจี; RTGS: Inthrasak Sachi), formerly Her Majesty Queen Indrasakdi Sachi (10 June 1902 – 30 November 1975), née Praphai Sucharitakul[1] (Thai: ประไพ สุจริตกุล; RTGS: Praphai Sucharitakun), full title Her Highness Princess Indrasakdi Sachi, was a royal consort of King Vajiravudh (Rama VI) of Siam.

She was one of the daughters of Chao Praya Sudharm Montri, the younger sister of Pra Sucharit Suda the one concubine of King Vajiravudh.

the name means "Sachi, wife of Indra."

Sachi would become queen after falling pregnant with King Vajiravudh's child, who was eager for an heir.

[2] However, the Queen miscarried five or six times during her queenship and was later demoted to the rank of Princess Consort.