Leeds flirted with the top five for much of this term but finished seventh, six points off the play-off zone.
Vieira, meanwhile, has been called up for the England Under-20 tournament and is likely to play in the Toulon Tournament this month.
His new deal ties him to Leeds until the end of the 2020-21, skysports.com report.
Ronaldo Vieira is already an established part of the Leeds midfield and is likely to have an even bigger influence next seasonGetty Images
Vieira was raised in Portugal and joined Benfica in 2009.
But he left for England two years later, playing for junior clubs before unsuccessful trials with Manchester City and Hull.
Leeds pounced and now he has commonly rated as a Premier League star of the future.
Elland Road boss Garry Monk hopes to turn Leeds into at least a play-off sideRex FeaturesRonaldo Vieira has played more than 30 senior games for Leeds, scoring onceReuters
most read in football
BAK SHOCK
Chelsea star Tiemoue Bakayoko involved in car crash on his way home from training
TINO PORNO
Newcastle idol Tino Asprilla invited to star in PORN movie by X-rated actress
January Sales
Man United boss Jose Mourinho wants bargain deal for Santos star Lucas Lima
Pog off
Pogba ordered to take ten-day holiday by Mourinho to help hamstring injury recovery
Chosen Juan
Ex-Chelsea flop Juan Cuadrado breaks his silence on failed £26m Arsenal switch
on his way
Chelsea accept £57million bid from Atletico Madrid for exiled star Diego Costa
Ronaldo Vieira is far more experienced at senior level than most teenagers in the ChampionshipRex Features
Sutton United 1-0 Leeds : Collins’ penalty causes FA Cup shock
Leave a comment