Jones' 18-year senior club career started with Welsh club Neath and included spells with the Ospreys and a season with Cardiff Blues before joining Harlequins in 2015.
"I've had a great career and never thought I'd go on to achieve what I have," he said in a statement. "I'm so passionately proud to have played so many times for Wales and was fortunate to be a part of three Grand Slam-winning teams."
(Reporting by Hardik Vyas in Bengaluru)
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