Person:

Title

abr.:

Form of address

Grand Duke Henri

Son Altesse Royale Le Grand Duc de Luxembourg

His Royal Highness The Grand Duke of Luxembourg

H.R.H.

His / Your Royal HIghness

Grand Duchess Maria Teresa

the spouce of
Grand Duke Henri

Son Altesse royale Maria Teresa,  Grande-duchesse consort de Luxembourg

Her Royal Highness The Grand Duchess of Luxembourg (née Mestre y Batista)

H.R.H.

His / Your Royal HIghness

Hereditary Grand-Duke  Guillaume

eldest son of

Grand Duke Henri &

Grand Duchess Maria Teresa

Le Grand-Duc Héritier, Prince de Luxembourg, 
Prince de Nassau et de Bourbon-Parme

His Royal Highness Prince Guillaume 

Hereditary Grand-Duke of Luxembourg, Hereditary Prince of Nassau,
Prince of Bourbon-Parma.

H.R.H.

His / Your Royal HIghness

Hereditary Grand Duchess Stephanie

the spouse of Hereditary Grand Duke Guillaume

Son Altesse royale la princesse Stéphanie

(née Countess de Lannoy)

Grande-Duchesse Héritière de Luxembourg,
Princesse de Nassau et de Bourbon-Parme, comtesse de Lannoy

Her Royal Highness Princess Stéphanie , Hereditary Grand Duchess of Luxembourg.  (née Lannoy)

H.R.H.

His / Your Royal HIghness

Prince Charles
of Luxembourg

son of 
Hereditary Grand Duke Guillaume &

Hereditary Grand Duchess Stephanie

Son Altesse royale Prince Charles de Luxembourg, P
rince de Nassau, Prince de Bourbon-Parme

His Royal Highness Prince Charles of Luxembourg,

Prince of Nassau, Prince of Bourbon-Parma

H.R.H.

His / Your Royal HIghness

Prince François
of Luxembourg

son of
Hereditary Grand Duke Guillaume &

Hereditary Grand Duchess Stephanie

Prince Félix

of Luxembourg

son of

Grand Duke Henri &

Grand Duchess Maria Teresa

Son Altesse royale Prince Felix  de Luxembourg, P
rince de Nassau, Prince de Bourbon-Parme

His Royal Highness Prince Félix of Luxembourg,

Prince of Nassau, Prince of Bourbon-Parma

H.R.H.

His / Your Royal HIghness

Princess Claire

of Luxembourg

the spouce of Prince Felix

Son Altesse royale la princesse Claire de Luxembourg (née Lademacher)

Princesse de Nassau et de Bourbon-Parme

Her Royal Highness Princess Claire of Luxembourg,

Princess of Nassau, Princess of Bourbon-Parma

H.R.H.

His / Your Royal HIghness

Princess Amalia

of Nassau

daughter of

Prince Felix &

Princess Claire

La Princesse Amalia de Luxembourg

Princesse de Burbon-Parme

Her Royal Highness Princess Amalia of Nassau

Princess of Bourbon-Parma

Prins Liam

of Nassau

son of

Prince Felix &

Princess Claire

Le Prince Liam de Luxembourg Prince de Nassau
Prince de Bourbon-Parme

His Royal Highness Prince Liam of Luxembourg

Prince of Nassau, Prince of Burbon Parma

Prince Balthazar
of Luxembourg

son of

Prince Felix &

Princess Claire

Le Prince Balthazar de Luxembourg Prince de Nassau
Prince de Bourbon-Parme

His Royal Highness Prince Balthazar of Luxembourg

Prince of Nassau, Prince of Burbon Parma

Prince Louis

of Luxembourg

son of

Grand Duke Henri &

Grand Duchess Maria Teresa

Son Altesse Royale le Prince Louis de Luxembourg

Prince de Nassau et de Bourbon-Parme

His Royal Highness Prince Louis of Luxembourg

Prince of Nassau, Prince of Burbon Parma

H.R.H

.

His / Your Royal HIghness

Prince Gabriel

of Nassau

son of

Prince Louis &
TessyAnthony

Son Altesse royale le prince Gabriel de Nassau

His Royal Highness Prince Gabriel of Nassau

Prins Noah of Nassau

son of

Prince Louis &
TessyAnthony

Son Altesse royale  le prince Noah de Nassau

His Royal Highness Prince Noah of Nassau

Prinsesse Alexandra

daughter of

Grand Duke Henri &

Grand Duchess Maria Teresa

Son Altesse Royale La Princesse Alexandra  Princesse du Luxembourg

Princesse de Nassau et de Bourbon-Parme

Her Royal Highness Princess Alexandra of Luxembourg
Princess of Nassau, Princess of Bourbon-Parma

H.R.H.

Her / Your Royal Highness

Prins Sébastien

son of

Grand Duke Henri &

Grand Duchess Maria Teresa

Son Altesse Royale le Prince Sébastien, Prince de Luxembourg

Prince de Nassau et de Bourbon-Parme

His Royal Highness Prince Sébastien of Luxembourg

Prince of Nassau

H.R.H.

His / Your Royal HIghness

Luxembourg's regent Grand Duke Henri is in "His Royal Highness", as Luxembourg is not a kingdom but a grand duchy.

Prince Louis married Tessy Antony on September 29, 2006. The Prince abandoned his inheritance rights for himself and all of the couple's children, although Louis retained his title as Prince of Luxembourg and the title of Royal Highness while his wife and the couple's child originally got the surname. Nassau without titles.

On Luxembourg's National Day on June 23, 2009, Grand Duke Henri gave the Tessy the title Princess of Luxembourg with the title of Her Royal Highness and the title Princess of Nassau and the title of Royal Highness to their sons and future children.

Sturhertugen announced divorce and separation for the Prince and Princess on January 18, 2017.

Then Tessy will lose her royal title. However, the couple's children will keep theirs and their place in the succession.