Scott's appointment follows the departure of GMG Worldwide chief executive Paul Willems who has joined photo-quality media manufacturer Ilford Imaging as chief executive.
In his new role Scott, who has been with the company for eight years - the last two as managing director of GMG UK, will work closely with GMG owners Joerg and Robert Weihing.
He said: "Working closely with Robert and Joerg will be terrific - we all bring different skills to the table and have a lot of respect for each other.
"Paul Willems has left GMG in a fantastic position. He did a great job and has left us a strong and dynamic company. I am very excited to join the management team and help shape GMG's future."
Robert Weihing added: "Ian has a talent for spotting future trends in the printing industry. He will bring a lot of energy, experience and ideas to the table. [Together] we will pursue our growth strategy with great determination to ensure we realise the enormous potential that GMG has.
"Our recent acquisition of Aurelon is an important strategic move to achieve our ambitious growth targets in the large-format print production market. In addition, beyond the existing product development plans, we see enormous potential for new, innovative, ideas and we are excited about Fespa and Drupa 2012 where we will have a strong presence."