General Chatchay Choonhavan (5 April 1920 - 6 May 1998) was the seventeenth prime minister of Thailand. He served 2 terms from 4 August 1988 until 23 February 1992. He was born "Chatchay Somboon" at Tambon Plabplachai Aumpher Sampantawong, Pranakornsriayuttaya province. His parents were Field Marshal Pin Chunhawan and Lady Wiboonlak Chunhawan. He began to study at Benjamarachoothit school, Teapsirin school, a military academy and he went to study in a higher education at a school of cavalryman in Kentucky (US).