Australia great George Smith has signed a two-year deal with Super Rugby outfit Queensland Reds.

Smith, 35, is a veteran of 111 Tests for the Wallabies and joins Reds for the 2017 and 2018 campaigns, while he will continue playing for Suntory Sungoliath in the Top League in Japan.

Having most recently played for Wasps in England, Smith said he is fit and healthy ahead of his return to Australia.

"The body feels great and the experience in England has been outstanding," he said.

"I'm really looking forward to playing Super Rugby again. I want to make a positive difference wherever I go and I feel I can do this with the Reds.

"My family and I are relocating to Brisbane for the long term and so the opportunity to make a very strong contribution to the Queensland Reds and also the broader Queensland community is something we are really excited about as a family.

"They are building a really strong playing list and I believe I can make a big impression.

"The Reds have discussed their desire for me to also help mentor some of the young players and to share what I have learnt across my career with the next generation.

"That is one of the more exciting parts about coming to the Reds. I would like to personally acknowledge and thank Suntory Sungoliath for allowing me to return to Super Rugby and the Reds in between our Top League campaigns and endeavours in Japan."

Reds general manager Daniel Herbert described Smith as "one of the greats of the modern game".

Smith was the inaugural winner of the John Eales Medal in 2002 and is sure to boost Reds, who have just three wins in 12 games this Super Rugby season.