H arald Link is a German-born Thai billionaire who is the chairman of B. Grimm, one of Thailand's oldest and most diversified business conglomerates. He represents the third generation of his family to lead the business, which has a history in Thailand stretching back to 1878 when it was founded as a German pharmacy. His family took control of the business, and Link's father greatly expanded it.

Under Harald Link's leadership, B. Grimm has transformed into a modern conglomerate with major interests in energy, industrial systems, and real estate. The group's most significant business is now B. Grimm Power, which has grown into one of Thailand's largest private power producers, with a growing portfolio of renewable energy projects. Link is also a passionate equestrian and is a key figure in the world of polo and other equestrian sports in Southeast Asia.