| Birth Year | 1953 |
| Birth Place | Zurich, Switzerland, Switzerland |
| Martin Haefner age | 69 YEARS OLD |
| Residence | Zurich, Switzerland |
| Spouse(s) | married |
| Parent(s) | Walter Haefner |
| Relatives | Eva Maria Bucher-Haefner (sister) |
He is the son of Walter Haefner. When he died in 2012, aged 101, he was the world's oldest Billionaire, and had a net worth of US$ 4.3 billion.
As of November 2015, Forbes estimated his net worth at US$2.4 billion.
