The club captain claims the award for the first time following a season filled with crucial goals and influential performances.
Guimaraes finished as the Magpies’ top Premier League scorer with nine goals and also led the squad with eight assists.
Despite missing 15 matches through injury, the South American delivered several decisive moments, including a late winner against Fulham and goals against Tottenham Hotspur, Burnley, Crystal Palace and Leeds.
His 17 goal involvements equal his best-ever return from the 2023/24 campaign.
Guimaraes now joins Dan Burn, Anthony Gordon, Kieran Trippier and Joelinton among recent winners of the prestigious Newcastle United award.