The 31-year-old will move to Loftus Road for a reported fee of £2million, once the relevant paperwork has been completed.
Park, who won four Premier League titles and a Champions League during his time at United, is understood to have been swayed to join QPR by their ambitious plans.
He became one of Sir Alex Ferguson's most reliable United players after joining the club in the summer of 2005.
Park began his professional career with Japanese side Kyoto Purple Sanga aged 18 and impressed during Guus Hiddink-led Korea's successful run to the World Cup semi-finals in 2002.
Such performances saw him follow the Dutchman to PSV Eindhoven, where he played for three years before joining United for £4million.
The new PUMA evoSPEED 1.2 FG. A great new soccer cleat with classic look and first time for PUMA to be on the cleat.
Borussia Dortmund hears Wembley Calling and are headed to London for the Champions League final.
One of the top soccer cleats for control the Nike CTR360 will not let you down on the field in tight spaces.
adidas has added some color to the Predator line with this new colorway. Released on May 17. Be the first to own a pair.
Chelsea won the Europa League on Wednesday. The Blues defeated Benfica 2-1 on injury time goal from Ivanovic.
The Juventus jersey for the 2013/14 was released earlier this week. Be the first to wear the colors of the Old Lady.
The Liverpool 2013/14 soccer jersey is available for pre-order. The Reds are eager to compete for silver next season.
Ajax has released their away soccer jersey for the 2013/14 season. Get in the Gear.
Bayern Munich are kings of Germany and hope to be crowned kings of Europe at Wembley later this month!
The push for more color on their cleats, adidas has added the infrared colorway to the adiZero f50 Line.