Fuming locals claim Halloween sounds were left blaring all night long at Thorpe Park - keeping them awake.
Wails, scary music and screams were played for 12 hours straight, residents say.
Jonathan Tennant, 56, lives close to the popular theme park in Chertsey, Surrey, which is running 'fright nights' in October.
He says the spooky sounds lasted from Sunday evening (8/10) into Monday morning - stopping him from sleeping.
Phone engineer Jonathan even went to the park gates in the early hours to complain, and recorded a video showing noise.
He says he also had to put ear defenders on his 12-year-old terrier Shamus to calm him down.
Jonathan said: "It was loud - and bloody annoying.
"The noise started at 10:30am on Sunday and should have finished at 7pm - but it went on and on."
Thorpe Park - billed as the UK's most thrilling theme park - is running 'fright nights' from October 6 to October 31, according to its website.
A description of the event reads: "Get ready for an adrenaline-packed day filled with terror and thrills that will leave you breathless!
"When the sun goes down, the park transforms into a heart-stopping playground of horror, where frights lurk at every corner."
Jonathan said his housemate was also affected by the sounds.
He added: "You could hear it all through the house and it kept waking me and my housemate.
"She's a teacher and she didn't sleep.
"I thought there'd at least be security, maintenance staff or cleaners, but it was all shut up and empty."
And another local said: "It's ridiculous. The bass started at about 6pm and rattled on until 7am. I've barely slept a wink."
The local residents' association have called for a meeting, according to reports.
Thorpe Park was approached for comment.