Blewett, who has been Australia’s fielding coach since 2014, will also be an assistant coach for both the West End Redbacks and Adelaide Strikers.
“It’s an exciting opportunity, to take another step in my coaching career at the same time as spending more time home in Adelaide,” said 45-year-old Blewett, who played 46 Tests and 32 one-day internationals.
“Coaching the SA under 19s and helping them progress through the elite pathways to senior cricket will be an enjoyable challenge for me.
“It will also be great to learn from working with Jamie Siddons (Redbacks coach) and Jason Gillespie (Adelaide Strikers coach).”
Blewett made his debut for South Australia at the age of 20 in 1991-92 and was part of the 1995-96 Sheffield Shield winning side.
Throughout his 15-year career as a stalwart in the Redbacks’ top order, Blewett amassed 9682 runs at 46.10, second only on SA’s all-time Shield runs list to current Australia coach Darren Lehmann.
Blewett scored an unbeaten 102 in his Test debut against England at Adelaide Oval in the 1995-96 season and became only the third Australian in Test history to score a century in each of his first two Tests after making 115 in Perth in the following match.
SACA General Manager, High Performance Tim Nielsen said: “Greg’s experience as a coach at the international level will offer our best cricketers tremendous insight into what it means to represent your state and country with success.
“We are very excited to welcome him back into the program.”