The track, which trails their as-yet-untitled sophomore album, was unveiled on Radio 1 earlier today.
The song was co-written and produced by Steve Mac, Wayne Hector and Ed Drewett, who helmed their chart-topping debut 'All Time Low' last year.
In a press release, Tom Parker said: "When we first heard 'Glad You Came' we just knew it had to be the first single from the new album.
"We all felt it was a new, refreshing sound and a perfect song for the summer which really gets you in the mood for a party."
The track's music video, which is described as "harder" and more "club-influenced" than their previous efforts, was shot in Ibiza, while a remix by Italian house DJ Alex Gaudino will also be released alongside the single.
'Glad You Came' is released on July 10.
Listen to the radio premiere of The Wanted's 'Glad You Came' below: