He was then applauded across social media and won the highest number of votes from the Connacht supporters.
Hailing from Roscommon, Buckley came through the Connacht Academy under Nigel Carolan and made his senior debut in September 2011 against Benetton Treviso.
The 22-year-old has since notched up 44 caps with the westerners, including 11 Heineken Cup appearances.
Last month he started in the number 1 jersey for all three RaboDirect PRO12 games, against Glasgow Warriors, Edinburgh and Zebre.
Connacht recorded two out of three victories during the month with Buckley delivering a man-of-the-match performance in the 11-7 win over Scottish side Edinburgh at the Sportsground.
Commenting on the February Player of the Month, assistant coach Dan McFarland said: "Denis has trained and played extremely well over the last couple of months. His scrummaging and energy have been real stand outs, playing a large part in the team's wins."
Award winner Buckley remarked: "This is the first time I've received the Player of the Month award and I'm really delighted with it. I'm enjoying my rugby so much at the moment.
"The wins last month were very pleasing and highlighted the team effort and how everything is coming together for us.
"My team-mate and fellow loosehead Brett (Wilkinson) had to announce his retirement last week and I'd like to wish him all the best.
"He has been outstanding for the province over the last number of years and I've learnt a lot from him. He will be hugely missed from the front row."
Richard Hartmann, Director of Hartmann Jewellers, added: "Congratulations to Denis on his first Hartmanns Player of the Month award. Denis has been brilliant for us since he fought his way back into the starting line-up after Christmas.
"He really gets around the park and it's great to see such a talented young prop come up through the Connacht system.
"The forward pack have been immense and have dominated so many opponents up front. It gives us supporters a huge sense of pride and we were thrilled to get the rewards last month.
"Most recently, the four consecutive try-scoring bonus points illustrate the hard work that is going in at the province and makes for exciting spectacles.
"We, at Hartmanns, are looking forward to seeing Connacht finish off the season on a high."