While accepting the honour, the 28-year-old star paid tribute to Beyonce, whose album 'Lemonade' was also nominated in the same category, saying the latter was a more deserving winner than her.
"I can't possibly accept this award. The Lemonade album was just so monumental, Beyonce. It was so monumental and well thought-out and beautiful and soul-baring... We appreciate that. All of us artists here adore you. You are our light," Adele said.
"I felt like it was her time to win. What the f- does she have to do to win Album of the Year?"
However, Beyonce, 35, who was the front-runner in the race with nine nods for "Lemonade", could only win in the two categories, including Best Urban Contemporary Album and Best Music Video.