William Soeryadjaya

William Soeryadjaya, also known as Tjia Kian Liong (; 20 December 1922 – 2 April 2010), also known as Om (Uncle) William, born in Majalengka, was a Chinese Indonesian businessman who co-founded Astra International, Indonesia's largest conglomerate.

He lost his parents at the age of 12 and had to cease his education at 19; despite that he continued his education by studying at Leder & Schoenindustrie in the Netherlands. that had suffered from a credit crisis and finally collapsed. He personally guaranteed all Summa Bank depositors their money back, and all depositors received their money back with interest without using any bailout package from the government at the expense of his ownership in Astra.

In 2009, Forbes magazine rated the Soeryadjaya family as Indonesia's 18th-wealthiest family. Universitas Kristen Indonesia also has a building called Graha William Soeryadjaya.