"The Nights" is a song by Swedish DJ and music producer Avicii. It features uncredited vocals by Nicholas "RAS" Furlong, who co-wrote the song with Jordan Suecof, Gabriel Benjamin, and John Feldmann. On 1 December 2014, it was released as a digital download by PRMD Music and Universal Island on Avicii's The Days / Nights, then on 11 January 2015 in the United Kingdom. The song peaked at number 6 on the UK Singles Chart and number 1 on the UK Dance Chart. On 23 January 2015, Avicii released "The Nights (Avicii by Avicii)", his own remix of the song. The song appears on the UK version of Avicii's second studio album Stories (2015).

Furlong noted that he began writing the song as an ode to his father. The inspiration for the “pirate-y fight song” sound came to him while at a bar in Ireland. Furlong recalled:

"I had been going back and forth with Jordan and Gabe about this song idea that merged commercially sound rock music with the signature sound of an Irish drinking song. When I returned to Los Angeles we all went into the studio."

Furlong sent the original idea, titled "My Father Told Me", to Arash Pournouri, Avicii's manager. Pournouri recognised an immediate draw to the track, saying that the song had that same sense of euphoria which characterises so much of Avicii's music. In an interview with Yahoo! Music, Pournouri said: "It made absolute sense to work on it with Ras...[Avicii and I just needed] to make it more 'us' and that's what [we] did."

Like his previous hits "Wake Me Up" and "Hey Brother", "The Nights" is a progressive house song containing elements of folk rock. It is written in the key of F#.

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