Thomas Kaeser is a German businessman, the CEO of Kaeser Compressors, a manufacturer of compressed air systems and vacuum products.

The company was founded in 1919 by Kaeser's grandfather, Carl Kaeser Sr., as a machine workshop, initially making parts for motor vehicles and engines. Kaeser is the sole owner of Kaeser Compressors, which he leads with his wife Tina-Maria Vlantoussi-Kaeser.

• Core Company: Kaeser Compressors (Compressed air systems and vacuum products).
• Founding: Founded in 1919 by his grandfather.
• Ownership: Sole owner of the company.

Thomas Kaeser's career is defined by his management of the family business through generational change and global expansion. He was groomed for succession and since 2009 has been responsible for the company's international expansion, which began in the late 1970s.

His structural contribution is tied to growing the company's global footprint and maintaining its technological leadership in compressed air systems. His son, Alexander Jan, joined the company in 2018 and assists its management.

• Key Role: Responsible for the company's international expansion since 2009.