The former Czech Republic international goalkeeper made just two appearances for the Loftus Road club last season as a back-up to Paddy Kenny.
“Radek is a great pro and a very good keeper,” manager Neil Warnock told QPR’s official site. “He deserves this new deal.
“Raddy and Paddy, along with [goalkeeping coach] David Rouse are a great team and the fact we did so well defensively last season is credit to the three of them who work so well together.”
The 37-year-old has made a total of 81 appearances since joining the club in 2008.