He is to replace Clare Morrow who has been in the role since 2008.
Ron McMillan has worked at PriceWaterhouseCoopers for 38 years, and ran the company’s Leeds office.
Welcome to Yorkshire’s chief executive Sir Gary Verity said: “I am delighted that Welcome to Yorkshire has made such a high calibre appointment. This is a challenging and rewarding role and I look forward to working with Ron over the years to come. I would like to thank Clare Morrow, our outgoing chair, for her tireless efforts over the last seven and a half years. Together we achieved some great successes, not least bringing the Tour de France to our county.”
Mr McMillan said:“I’ve seen the many great things that have been achieved by Welcome to Yorkshire over the last few years and I am very excited to be joining such an innovative organisation. I am looking forward to playing my part in increasing the profile of Yorkshire in the UK and around the world.”