The new deals will tie the threesome to the Pies until at least the end of the 2022 season.
Moore is coming off a stellar campaign where he averaged 13.2 disposals and 4.8 marks per game to claim his first All Australian blazer and finish fourth in the best and fairest.
Daicos enjoyed a breakout season where he elevated himself as one of the game’s brightest young stars, averaging 17.3 disposals per game on the wing to come third in the best and fairest.
Keane made his debut in Round 9 against Fremantle and is highly touted within the club.
Pies list boss Ned Guy was thrilled to secure the three signatures.
“Clearly, given the ages of all three players, there is significant upside,” Guy told the club website.
“Even for someone like Darcy, who is now and All-Australian, his peak years are ahead and with Josh and Mark they have so much scope to develop. We expect all of them to be important to Collingwood for many years to come.”