Than Phu Ying Busba Kitiyakara Sathanapong (Thai: บุษบา กิติยากร สธนพงศ์; RTGS: Butsaba Kitiyakon Sathanaphong, born 2 August 1934) is the daughter of Mom Chao Nakkhatra Mangala Kitiyakara and younger sister of Thailand's Queen Mother Sirikit Kitiyakara.

Like her elder sister Sirikit, Busba was educated at Rajini School and St. Francis Xavier Convent.

During her childhood, her father was appointed Thai Ambassador to France, Denmark and the United Kingdom, and Busba continued her education in these countries with her sister, Sirikit.

After Sirikit's marriage to King Bhumibol in 1950, Busba became a palace fixture.

She later married Captain Surayud Sathanapong.