“I’m very excited and honoured to succeed a leader I admire as much as John Veihmeyer to take on the role of chairman of KPMG International,” Thomas said.
“We have been driving innovation across all parts of our business and I intend to continue and accelerate that trend.”
Thomas has been with the firm for 28 years and was chairman of the Americas region since March 2014. He served as CEO and senior partner of KPMG in Canada from 2009 to 2016.
Veihmeyer said Thomas brought an “exceptional range of skills and experience that will benefit KPMG and the clients our professionals serve”.
“I’m confident that Bill’s authentic leadership will bring tremendous value to KPMG, our people and to client,” he said.
Veihmeyer had an eventful last month in office as he was forced to publicly apologise over the scandal engulfing KPMG South Africa.
Most of the firm’s senior management quit over its links with the Gupta family who are under investigation over allegations of political corruption.