The murder of Sophie Lancaster occurred in England in August 2007. The victim and her boyfriend, Robert Maltby, were attacked by a group of teenage boys while walking through Stubbylee Park in Bacup, Rossendale, Lancashire, on 11 August 2007. As a result of the severe head injuries Lancaster sustained in the attack, she went into a coma from which she never regained consciousness, and died of her injuries thirteen days later. The police said the attack may have been linked to the couple wearing gothic fashion and being members of the goth subculture.

Bacup is a town in the Rossendale Borough in Lancashire, England, in the South Pennines close to Lancashire's boundaries with West Yorkshire and Greater Manchester. The town is in the Rossendale Valley and the upper Irwell Valley, 4 miles (6.4 km) east of Rawtenstall, 6 miles (9.7 km) north of Rochdale, and 7 miles (11 km) south of Burnley. At the 2011 Census, Bacup had a population of 13,323.