Robert Angus Ackerman (born 2 March 1961) is a Welsh former dual-code international rugby union and rugby league footballer. In 1983 he toured New Zealand with the British and Irish Lions whilst playing for London Welsh RFC. A centre, he also played club rugby for Newport RFC. He was educated at Christ College Brecon.
He made his Welsh debut on 1 November 1980 against the All Blacks at Cardiff, at the age of 19. He also played rugby league, turning professional on 13 April 1986 when he signed for Whitehaven in Cumbria. He went on to play for Leeds, Carlisle Border Raiders, and finished his rugby league at Salford in 1993. He taught at Christ's College, Christchurch, New Zealand and coached the 1st XV in 2008. In 2012, Ackerman taught Physical Education at St Patrick's College, Silverstream, New Zealand. Ackerman was also the coach of the Silverstream 1st XV rugby team, leading the team to victory at the 2012 Wellington Premier 1 Finals. He moved to live and work in Melbourne in February 2017, as the Director of Coaching for Rugby at Haileybury College, and is currently a Casual Relief Teacher in Regional Victoria, Australia.