Richardt Strauss played in eight of the nine fixtures and commentators noted his passion, skill and consistent set-piece work.
Those who nominated the South African hooker were most impressed with his man-of-the-match display in the Magners League against Connacht and his performances in the Heineken Cup encounters against Racing Metro 92 and Saracens which helped Leinster secure two crucial victories.
Commenting on his award win, Strauss said: "I am delighted and surprised to receive this award. Obviously we have enjoyed a good run of form recently and it has been a real team effort.
"I would like to pay tribute to the other players and to our coaches because rugby isn't about individuals.
Focusing on the games ahead for Leinster, he added: "We are about to begin a massive period in the season and it is vital that we approach the Dragons game on Friday in a positive frame of mind.
"They have really improved this season and we know from experience how difficult they will be.
"With so many of the players away on international duty, it will be another big test of our squad but all of the players are up for the challenge and determined to build on our previous win against Edinburgh."
Leinster supporters can now vote for the November Bank of Ireland Leinster Rugby Player of the Month. To vote simply email email@example.com and select the player you think should receive the award - from Friday night's encounter with the Dragons and next weekend's away game against the Ospreys.
Everyone who nominates a player is in with a chance to win a €100 gift voucher.