Niedermeyer was born in Opava in what is now the Czech Republic. His mother died shortly after his birth. His father, a successful cafe owner, was a political prisoner for seven years in a Nazi concentration camp. Helmut Niedermeyer was interned (a "war-volunteer") by the Soviets for five years and survived captivity in part thanks to being able to act in theater. After the war, the family moved to Vienna.[1]
He began his career as a salesman in 1949.[1] In 1957 he founded the company Niedermeyer AG as X-ray, photo and film products business. The company and its branches grew, and in the 1980s and 1990s became Niedermeyer-Konzem through various acquisitions. Niedermeyer retired from the board of the company in 1997. Two years later, it was sold to T-Mobile and changed ownership several times. It went bankrupt in 2013.[2]
He died on 3 February 2014 of a heart attack in Tenerife, Spain. He is survived by his daughter, Angelika, and a son, Christian.[2]