The Dragons have announced that back-row forward Sam Lewis will join the Rodney Parade outfit from the Ospreys after inking a two-year deal.
The flanker is currently with the Ospreys regional team having previously played for Swansea RFC and will join the Dragons from June 2014.
"I have always been a big fan of Sam and his brother before him," Dragons director of rugby Lyn Jones revealed on the region's official website.
"He comes from a good rugby family and has the edge to become a quality international player. Playing regularly will help him achieve his ambitions.
"This is a significant signing for us and just shows our determination to become the best region in Wales."