L im Chai Hock is a Malaysian businessman and a key executive in the Indonesian coal mining industry. He is a co-founder and the Chief Operating Officer of Bayan Resources, one of Indonesia's largest coal producers. Lim has a long-standing partnership with the company's founder, billionaire Low Tuck Kwong, having worked together since the early days of their infrastructure and mining ventures in Indonesia.

Starting his career as a site manager at Jaya Sumpiles Indonesia, a contracting firm, Lim played a crucial role in the operational development of the Bayan Group's mining assets. His expertise in land surveying and operations management helped transform Bayan Resources into a major energy player. He sits on the boards of several subsidiaries within the group and holds a significant equity stake in the publicly listed parent company, deriving his wealth from the success of its coal mining operations.