What post-nominal letters may Bolt use as a member of the Order of Jamaica? He may use OJ. The letters identify membership in Jamaica's Order of Jamaica, one of the country's national honours.
Bolt received the honour in 2009, at age 23, for outstanding performance in athletics at the international level. He became the youngest person to receive the Order of Jamaica at that time. The award also permits him to be formally styled “The Honourable,” so references may place that title before his name and OJ after it.
Post-nominal letters are abbreviations written after a person's name to show an honour, qualification or office. OJ is distinct from CD, which Bolt received as a Commander of the Order of Distinction in 2008. That earlier honour explains why CD can appear in accounts of Bolt's Jamaican decorations, but it is not the designation asked for here.
The Order of Jamaica should not be confused with Jamaica's Order of Merit or Order of Distinction. In the Jamaican honours system, the OJ is commonly described as the equivalent of a knighthood.