"Meltdown" is a song by Irish singer-songwriter Niall Horan, released through Capitol Records as the second single from his third studio album The Show released on 28 April 2023.
On 13 April 2023, Horan announced the release of "Meltdown". Taking to social media to discuss the song, Horan shared: "[the] song is basically about feeling anxious and being in that kind of freaking out moment but knowing deep down that everything will be alright."
On 19 May 2023, Horan released an acoustic version of the single.
On 15 May 2023, Horan performed "Meltdown" on The Voice.
In Ireland, "Meltdown" debuted at number 15 on the Official Irish Singles Chart Top 50 on 5 May 2023.
In the United Kingdom, on 2 May 2023, the Official Charts Company released their midweek chart predictions, and placed "Meltdown" at debuting at number 52 on the UK Official Singles Chart Top 100. However, "Meltdown" debuted at number 62 on the UK Official Singles Chart Top 100 and debuted at number 48 on the UK Official Singles Downloads Chart Top 100 on 5 May 2023.
In New Zealand, the single debuted at number 1 on the New Zealand Hot Singles Chart. (RMNZ).