9. Chamoy Thipyaso
Length of sentence: 141,078 years
In 1989, Chamoy Thipyaso was given a jail term of 141,078 years. Thipyaso was involved in a pyramid scheme that defrauded around 16,231 people. Some of the people who lost money were allegedly members of the Royal Household which might explain the sentence. Thipyaso was thus handed down the longest sentence for corporate fraud, according to Guinness World Records 2006.