Than Phu Ying Boonruen Choonhavan (née Sophot; Thai: บุญเรือน ชุณหะวัณ; RTGS: Bunruean Chunhawan; 25 April 1920 – 14 August 2021) was a Thai socialite who was the wife of Chatichai Choonhavan, Prime Minister of Thailand and a relative of the Queen Mother Srinagarindra.