Great Britain duo Matt Diskin and Danny Ward have agreed new deals with Leeds.
They have agreed one-year extensions to their contracts, which were due to finish at the end of the 2005 season.
Back row forward Jamie Jones-Buchanan has also signed a new contract that will keep him with the Super League champions until the end of 2006.
"All three have continued to develop their undoubted talent over the past year and hopefully there is still more to come," said Rhinos coach Tony Smith.
Diskin, currently sidelined with a knee ligament injury, was recently the subject of a bid for rivals Bradford.
"I am particularly pleased for Matt to have cleared up his future," added Smith.
"He is working hard to get back to full fitness and I know he will come back stronger than ever in the coming months."