Alcock v Chief Constable of South Yorkshire Police [1991] UKHL 5, [1992] 1 AC 310 is a leading English tort law case on liability for nervous shock (psychiatric injury).

This occurred at the Hillsborough Football Stadium, Sheffield during the FA Cup Semi-Final in which 96 spectators were killed and 450 injured in a human crush.

Despite considerable public controversy, South Yorkshire Police had admitted liability in negligence for the deaths, having allowed too many supporters into the stadium.

In the Alcock case, 10 relatives of the deceased brought negligence claims in tort for psychiatric harm or nervous shock.

The decision has been criticised as being excessively harsh on the claimants, as well as not fully corresponding with medical knowledge regarding psychiatric illness brought about by nervous shock.