Wasps confirm De Jongh signing
The 29-year-old centre has won 19 caps for the Springboks since making his try-scoring international debut against Wales in 2010.
De Jongh was also a member of the South African Sevens team that won a bronze medal at the 2016 Rio Olympics.
He has made 56 appearances for Western Province since his Provisional debut in 2009 and 94 Super Rugby appearances for the Stormers, scoring 75 points.
De Jongh has returned from injury this season to earn inclusion in the South Africa 'A' squad to face the French Barbarians in June.
"I can't wait to play for such an amazing club as Wasps in the Premiership and am relishing the ultimate challenge that lies ahead," said De Jongh. "Wasps has an incredible pedigree and some phenomenal players, and working with everyone there is going to help me improve my game.
"From everything I've heard, Wasps sounds like a fantastic place and a perfect fit for any top end athlete to be. Having watched their last couple of games, I believe there is a lot to look forward to at the club.
"Hopefully I can add some experience and energy to an already well-established and talented side and hopefully we can start pushing towards European and Premiership success. I am 100 percent focused on what I want to achieve on the field next season and can't wait to get started.
"For the next couple of months, I remain totally committed to the Stormers and to achieving our goals. It would be one of the highlights of my career if I could be part of a team that again reached the Super Rugby finals."
Speaking about the Springbok centre, Wasps' Director of Rugby Dai Young said: "We are really pleased to have Juan coming on board next season. He has a good eye for a gap and plenty of pace which makes him dangerous in attack, while he also has strong organisational skills in defence.
"Juan's international experience and his ability to play 12 and 13 will also benefit the squad, with Kurtley [Beale] returning to Australia to further his Wallaby career, Nick [De Luca] retiring and Alapati [Leiua] moving to Bristol. Juan and Gaby Lovobalavu's arrival will add to the talented group of centres we have at the club.
"Juan is a good friend of Ashley Johnson whose opinion we respect highly. We feel he will fit into the squad really well next season after we've all dusted ourselves down from the Premiership Final defeat and re-grouped to prepare to go again for the 2017/18 campaign."
