The popular wide-man has suffered an injury plagued season but has recently returned to full fitness with the reserves.
The Socceroos play Turkey at Aussie Stadium on Friday 21 May and at Telstra Dome in Melbourne on Monday 24 May.
Tiatto is joined in the squad by Premiership stars Brett Emerton (Blackburn), Stan Lazaridis (Birmingham) and Mark Schwarzer (Middlesbrough).
Rest of the Australian squad:
Marco Bresciano (Parma, Italy)
Scott Chipperfield (FC Basel, Switzerland)
Simon Colosimo (Parramatta Power, Australia)
Ahmad Elrich (Parramatta Power, Australia)
Vince Grella (Empoli, Italy)
Zeljko Kalac (Perugia, Italy)
Patrick Kisnorbo (Heart of Midlothian, Scotland)
Steve Laybutt (Excelsior Mouscron, Belgium)
Adrian Madaschi (Partick Thistle, Scotland)
Ante Milicic (Pahang, Malaysia)
Jade North (Perth Glory, Australia)
Josip Skoko (Genclerbirligi, Turkey)
Mile Sterjovski (Lille, France)
Tony Vidmar (Cardiff City, Wales)
Max Vieri (Napoli, Italy)
David Zdrilic (Aberdeen, Scotland)