The Wales star believes the Liverpool midfielder is crucially important to the country's hopes.
Bale has been the man who has grabbed the headlines for Chris Coleman's side throughout the Euro 2016 group stage, scoring in all three of his country's games so far at the tournament.
However, whilst Bale is the player everyone talks about, Allen has been quietly superb in the midfield for the Red Dragons and has been an integral cog in the machine as Wales topped Group B to reach the last 16 of their first major tournament since 1958.
Bale hailed his teammate and insisted that the 26-year-old should receive far more credit for the role that he plays than he gets.
The world's most expensive player told reporters, as shown by BBC Sport: "Joe's been amazing. I can't really speak highly enough of him. He's been incredible and I think he does all the dirty work that maybe goes unnoticed, but for us in the squad we know how vitally important he is and how amazingly he's played.
"In the squad we appreciate him very much. Maybe he doesn't get the headlines, but in the squad he gets the headlines. He works his socks off every game, he's an incredible player and I'm sure he'll go on to do incredible things in his career as well."
Allen's performances have continued his impressive late-season form for Liverpool as he began to play an increasingly prominent role under Jurgen Klopp.
However, there is still a big question mark over his Anfield future with only a year left to run on his current deal and no sign of an offer of an extension on its way.
Allen has been linked with a return to hometown club Swansea City and Spanish side Sevilla are thought to have lodged an offer, but Liverpool fans pleaded with their club on Twitter to keep him at the club after his stellar display against England last week.