The 38-year-old Socceroos superstar hangs up the boots after 107 caps and 50 goals in green and gold.

Cahill took to social media on Tuesday morning, confirming the news, only weeks after competing at his fourth World Cup.

 

Today’s the day that I’m officially hanging up my boots on my international career with the Socceroos. No words can describe what it has meant to represent my country. It took a while to play my first game for Australia, and I promised myself then that I would never miss a beat and would make the most of every opportunity I was given to wear the badge and jersey. As a kid all I wanted to do was to represent my country and so many of my most memorable moments as a footballer have come whilst playing for Australia, and I will be forever grateful for that. It's been a dream come true, and I have so many great memories from the last 15 years with the coaches, support staff and the army of Aussie fans behind us. My mentality has always been that I would treat every game like it was going to be my last. This has helped me to always fight for my spot in the squad. The jersey is like a medal of honour and the last 4 years especially I've understood that this badge and jersey belongs to Australia and every time I stepped out onto the pitch I was representing 24 million Australians. I feel now is the right time to call it a day playing for Australia. I would like to thank my parents for being there from day 1 and for their constant support, and to my wife and kids for making sacrifices to allow me to follow my dreams and to prolong my international career. Looking up into the stands before a match and seeing them there always lifted me to give everything on the pitch. I would also like to thank my friends, coaches, team mates and the fans who have all played a part in my career with Australia. We are so lucky to have such passionate supporters and there is no feeling like walking out on the pitch and seeing (and hearing!) so many in green and gold. It’s been a privilege and an honour.

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Cahill's retirement comes as no surprise, given his age and the fact he's currently without a club after leaving Championship club Millwall at the end of last season.

The former Everton man left Melbourne City in January before joining Millwall but struggled for opportunities with the Lions.

Despite the lack of game-time, Cahill was still selected in the Socceroos squad for the 2018 World Cup by coach Bert van Marwijk, appearing as a substitute in the final group game against Peru.

Cahill, who debuted for Australia as a 24-year-old in 2004, had previously competed at the 2006, 2010 and 2014 World Cups, scoring in all three, although he was unable to reproduce those heroics in Russia.

Speaking about his retirement, Cahill wrote: "No words can describe what it has meant to represent my country.

"It took a while to play my first game for Australia, and I promised myself then that I would never miss a beat and would make the most of every opportunity I was given to wear the badge and jersey.

"As a kid all I wanted to do was to represent my country and so many of my most memorable moments as a footballer have come whilst playing for Australia, and I will be forever grateful for that.

"It's been a dream come true, and I have so many great memories from the last 15 years with the coaches, support staff and the army of Aussie fans behind us.

"My mentality has always been that I would treat every game like it was going to be my last. This has helped me to always fight for my spot in the squad.

"The jersey is like a medal of honour and the last 4 years especially I've understood that this badge and jersey belongs to Australia and every time I stepped out onto the pitch I was representing 24 million Australians.

"I feel now is the right time to call it a day playing for Australia. I would like to thank my parents for being there from day 1 and for their constant support, and to my wife and kids for making sacrifices to allow me to follow my dreams and to prolong my international career.

"Looking up into the stands before a match and seeing them there always lifted me to give everything on the pitch. I would also like to thank my friends, coaches, team mates and the fans who have all played a part in my career with Australia.

"We are so lucky to have such passionate supporters and there is no feeling like walking out on the pitch and seeing (and hearing!) so many in green and gold.

"It’s been a privilege and an honour."