The homegrown players have all come through the Dragons Academy set-up before progressing into the senior set-up.
The trio have now been rewarded for their continued development with contract extensions as Dragons invest in the best young talent a their region.
“We’re pleased that Chris, Josh and Luke will continue to develop in our environment and look forward to seeing that progress in the comings seasons,” said Dean Ryan, Director of Dragons Rugby.
Newport-born prop Coleman, 23, made his debut for Dragons in the Judgement Day clash with Scarlets in 2018.
The former Wales Under 20s international has gone on to make 20 appearances to date for the Men of Gwent.
Loosehead Reynolds, 23, made his senior debut in the Anglo-Welsh Cup clash with Scarlets in 2017.
Reynolds – also a Wales Under 20s international – has made 32 appearances for Dragons.
Prop Yendle, 21, is currently on loan at English Championship club Jersey Reds to gain invaluable senior rugby experience.
The Wales Under-19s international tighthead made his Dragons debut in the Heineken Champions Cup clash with Wasps in December 2020.