Dragons forwards Lewis Evans and Matthew Screech have extended their contracts with the region for another two years.
A former captain, Evans, 31, is the region's record appearance holder with 225 outings since his 2006 debut.
Screech, 26, joined the Dragons in 2013-14, and has made 119 appearances.
"Retaining Lewis and Matthew with their experience will prove invaluable during the Rugby World Cup," said head coach Ceri Jones.
"Lewis is a leader on and off the pitch, born in the region and a true stalwart, so it's great for Lewis and the Dragons to keep him as a player and develop him as a coach for the future.
"Screech brings excellent work rate around the park and physical presence at set piece, at 26 he is a player coming into his prime."