Donald Forbes (1935 – 12 April 2008) was a Scottish convicted murderer. Forbes was convicted and jailed on three occasions, twice for murder and once for drug offences. He was at one time branded as "Scotland's most dangerous man". Forbes was found guilty of murder in 1958 after a robbery at a fish factory in Edinburgh in which he killed night watchman Allan Fisher. Forbes was originally sentenced to the death penalty but it was reduced to life imprisonment. 12 years after the offence Forbes was freed.