Marinos, 43, the GM Commercial Marketing at Saru, will take up his new role from 1 January, 2016.
“I’d like to congratulate Andy on behalf of the South African rugby community,” said Jurie Roux, CEO of Saru.
“This is an extremely important position in southern hemisphere rugby and Andy takes to it a wealth of experience – not only as an administrator, but as a former player in the competition.
“He has been Saru’s ‘point man’ on Sanzar business for a number of years and has worked closely with our partners in Australia, New Zealand and Argentina on the development of the competition over the years.