Here we take a look at 10 for which nobody is yet behind bars.
Anyone with information on any of the murders listed here should contact South Yorkshire Police on 101.
9. Patricia Grainger -1997
Patricia, who had learning difficulties and the mental capacity of a 12-year-old child, was stabbed, sexually assaulted and strangled. Her body was then dumped under a discarded bed base near to a brook close to her family home in Buchanan Road, Parson Cross. Photo: JPI Media
10. Justin Hague - 2011
Justin Hague, 40, died from stab wounds following an altercation in Brinsworth in December 2011. While three men later faced charges of aggravated burglary in relation to the incident, nobody had ever been brought to justice in relation to the killing. Photo: JPI Media