Mashile succeeds Mandla Langa whose contract ended on June 30.
Mashile's appointment is with immediate effect and his five-year contract is expected to end in 2010.
Before joining Icasa, he worked as director of Infrastructure Development and Management at the Rustenburg Municipality.
He obtained a Masters degree in Physics at Lancaster University in the UK and a Masters degree in Electronic Engineering at Washington University in St Louis.
"Mashile brings considerable experience to the regulator and has demonstrated a level of commitment and expertise that will prove to be a valuable asset to the role of chairperson at the authority," said a statement released by Icasa.
The regulator has also appointed M Zokwe as a member of the Council.
Zokwe has been involved in business activities in the areas of Satelite Services, Safety and Security, Corporate Communications and Projects Co-ordination.
He has an Honours degree in Communication Arts from the University of Technology in Australia.
He also has various postgraduate certificates from Wits Business School.
Congratulating the new appointees, Communications Minister Ivy Matsepe-Casaburri said she had no doubt in her mind that, under their leadership, Icasa would be able to perform well, and face up to its challenges and deliver on its mandate.
Icasa was set established in terms of the Independent Communications Authority of South Africa Act, No 13 of 2000 to regulate the country's fast growing telecommunications and broadcasting industries. - BuaNews