The fruit has been banished from the upcoming festivals along with fireworks, animals and weapons.
Organisers are worried about fans of the band Glass Animals, who have been bringing hundreds of the fruit to their gigs in a nod to the lyric ‘pineapples are in my head’ in the song ‘Pork Soda’.
A spokesperson for Reading and Leeds Festivals told the BBC: ‘Organisers were a little concerned about hundreds of pineapples turning up on site so decided to ask fans not to bring them along.’
He added: ‘The tongue may be slightly in cheek on this one.’
Glass Animals drummer Joe Seaward said fans would now rise to the ‘challenge’.
He told NME: ‘Anyone who wasn’t bringing a pineapple definitely is now.’
‘It’s fruitist. Watermelons are fine, but not pineapples?’
He added: ‘It’s irresponsible to stop young people at a festival having vital vitamin P.’
Other items that have been banned include gas cannisters, animals (other than registered hearing or guide dogs), items that may be considered as weapons, paper lanterns, fireworks or flares, and large bags (bigger than A4 size).
Reading and Leeds Festivals takes place from August 25 to 27.