The 28-year-old kept two clean sheets across the month and won one Man of the Match accolade against Crystal Palace during our 0-0 draw at Selhurst Park.
Onana then produced a superb double save to deny Eddie Nketiah and Ismaila Sarr, earning plaudits from far and wide.
Erik ten Hag's side perhaps should have won in Croydon, but Andre's heroics certainly played a part in keeping a clean sheet all the more.
The Cameroon international also produced another shutout in our 3-0 success at Southampton, including a crucial penalty save from Saints striker Cameron Archer.
With the game at 0-0, Andre denied Archer from the spot before the Reds sprung into life, scoring three times at St.