The line of succession to the Monegasque throne is a list of people entitled to succeed to the throne of Monaco. The line of succession was most recently and notably modified by a constitutional change implemented by Princely Law 1.249 of 2 April 2002.
Under the constitution of Monaco, the crown passes according to male-preference cognatic primogeniture. Only persons descended from the reigning monarch and the reigning monarch's siblings and their descendants, whose parents have been married at some point with the monarch's approval, and who are Monegasque citizens are eligible. Children born as a result of adultery are permanently excluded. A dynast forfeits succession rights if he or she marries without the monarch's permission, along with descendants of the unapproved marriage, but can be restored into the line of succession if the marriage produces no issue and ends before the demise of the crown.
Should no one be eligible to succeed according to the succession laws, a council of regency takes power until the Crown Council elects a new monarch from among the more distant descendants of the House of Grimaldi.
The list below includes only persons eligible to succeed to the throne (numbered 1 to 12).
A person born to a dynast who was not married to the other parent at the time of birth (such as Alexandre Coste, Camille Gottlieb or Raphaël Elmaleh) does not have any succession rights unless legitimized by his or her parents' subsequent marriage (Civil Code 229 states: "Les enfants légitimés par le mariage subséquent auront les mêmes droits que s'ils étaient nés de ce mariage"). Louis and Pauline Ducruet and Alexandre (Sacha) Casiraghi have been legitimised by their parents' subsequent marriages.
Until 2002, the crown of Monaco could only pass to the direct descendants, including adopted children, of the reigning prince. As a result, Princess Antoinette was not in the line of succession and Princesses Caroline and Stéphanie would have lost their places in line at the moment of Prince Albert's accession, and there would be no further dynasts eligible to succeed to the throne.