Yarde re-signs for Harlequins
"I am really happy to have re-signed for Harlequins for the next few seasons," Yarde said.
"Since joining, I've enjoyed being part of a great team with some exceptional players. We have a side that is truly capable of beating anyone and I'm excited to be a part of that.
"We have started this season well and I'm pleased with my personal form; it was a very easy decision to make."
The England international wing joined Harlequins in 2014 and has since made 30 appearances, scoring nine tries.
Born in Castries, St Lucia, he attended Whitgift College before graduating from the London Irish Academy.
Representing his country at all levels from Under-16, he made his senior international debut against Argentina in June 2013, scoring two tries. He has since made seven Test appearances including three stand-out performances during England's summer tour to New Zealand in 2014. The wing was included in the wider training squad ahead of Rugby World Cup 2015.
A powerful athlete with an exceptional ability to find holes in opposing defences, the 23 year-old has been a key part of Harlequins' attack for the last two seasons. His pace and power has set the platform this season for the Club to sit within the top four of the Aviva Premiership and at the top of the European Rugby Challenge Cup Pool.
Confirming the news, Harlequins Director of Rugby, Conor O'Shea said: "Marland is a young man with boundless potential and we will work with him to make sure he fulfils it.
"He combines pace, power, physicality and footwork allied to the fact that he is a good footballer. We are delighted that Marland has committed and know within this group he will go from strength to strength."