The Constitution of 1903

CHAPTER IV: THE KING

Article 57

In Serbia reigns King Petar I from the House of Karageorge.

The King is succeeded by his male issue from legal wedlock in the primogeniture. If King leaves no male issue, the succession of the Throne is transmitted to the lateral line of the male issue, within the same primogeniture principle.

The Constitution of 1921

CHAPTER V: THE KING

Article 56

In Kingdom of the Serbs, Croats and Slovenes reigns Petar I Karadjordjevic. King Petar shall be succeeded by Crown Prince Aleksandar and his male issue from legal wedlock, in the primogeniture.

When King remains without male descent, he shall nominate his successor from a lateral line, with consent of the National Assembly. For such consent half plus one of the total number of members of the National Assembly shall be required.

Article 57

Royal House is composed of Queen Consort, King’s living ancestors and descendants in direct line, sith their consorts, blood brothers and their descendants with their consorts and sisters of the reigning King. Relative position and rank of House members within the Royal House shall be regulated by Statutes that shall be promulgated as a law. No member of the Royal House may hold position of a Cabinet Minister of Member of the National Assembly.

The Constitution of 1931

CHAPTER V: THE KING

Article 36

In the Kingdom of Yugoslavia reigns King Aleksandar I from the House of Karageorge.

King Aleksandar shall be succeeded by his male issue in primogeniture.

Article 37

When the King remains without male issue, He shall designate his successor from the lateral line. In case that the King designates no successor during His lifetime, the National House of Representatives shall, in plenary session, elect the King from the same House.