Henri Membertou (died 18 September 1611) was the sakmow (Grand Chief) of the Mi'kmaq First Nations tribe situated near Port Royal, site of the first French settlement in Acadia, present-day Nova Scotia, Canada. Originally sakmow of the Kespukwitk district, he was appointed as Grand Chief by the sakmowk of the other six districts.His exact date of birth is not known. However, Membertou claimed to be a grown man when he first met Jacques Cartier, which would mean that he was probably born in the early years of the sixteenth century.
Before becoming grand chief, Membertou had been the District Chief of Kespukwitk, a part of the Mi'kmaq nation which included the area where the French colonists settled Port-Royal. In addition to being sakmow or political leader, Membertou had also been the head autmoin or spiritual leader of his tribe — who believed him to have powers of healing and prophecy.
Membertou became a good friend to the French. He first met the French when they arrived to build the Habitation at Port-Royal in 1605, at which time, according to the French lawyer and author Marc Lescarbot, he said he was over 100 and recalled meeting Jacques Cartier in 1534.
Both Lescarbot and explorer Samuel de Champlain wrote of having witnessed him conducting a funeral in 1606 for Panoniac, a fellow Mi'kmaw sakmow who had been killed by the Armouchiquois or Passamaquoddy tribe, of what is now Maine. Seeking revenge for this and similar acts of hostility, Membertou led 500 warriors in a raid on the Armouchiquois town, Chouacoet, present-day Saco, Maine, in July, 1607, killing 20 of their braves, including two of their leaders, Onmechin and Marchin. 
He is described by the Jesuit Pierre Biard as having maintained a beard, unlike other Mi'kmaq males who removed all facial hair. He was larger than the other males and despite his advanced age, had no grey or white hair. Also, unlike most sakmowk who were polygamous, Membertou had only one wife, who was baptised with the name of "Marie". Lescarbot records that the eldest son of Chief Membertou had the name Membertouchis (Membertouji'j, baptised Louis Membertou after the then-King of France, Louis XIII), while his second and third sons were called Actaudin (absent at the time of the baptism) and Actaudinech (Actaudinji'j, baptised Paul Membertou). He also had a daughter, given the name Marguerite.
After building their fort, the French left in 1607, leaving only two of their party behind, during which time Membertou took good care of the fort and them, meeting them upon their return in 1610.
Three songs of Membertou survive in written form, and provide the first music transcriptions from the Americas. The melodies for the songs were transcribed in solfège notation by Marc Lescarbot. The time values of each note were recorded in an arrangement of Membertou's songs in mensural notation by Gabriel Sagard-Théodat.
The melodies use three notes of the solfege scale - originally transcribed as Re-Fa-Sol by Lescarbot, but more easily sung as La-Do-Re. Transcriptions of these songs are available for Native American Flute.
On 24 June 1610 (Saint John the Baptist Day), Membertou became the first native leader to be baptised by the French, as a sign of alliance and good faith. The ceremony was carried out by priest Jessé Fléché, who went on to baptize all 21 members of Membertou's immediate family. It was then that Membertou was given the baptismal name Henri, after the late king of France, Henry IV.
Membertou was very eager to become a proper Christian as soon as he was baptized. He wanted the missionaries to learn the Algonquian Mi'kmaq language so that he could be properly educated. Biard relates how, when Membertou's son Actaudin became gravely ill, he was prepared to sacrifice two or three dogs to precede him as messengers into the spirit world, but when Biard told him this was wrong, he did not, and Actaudin then recovered. However, in 1611, he contracted dysentery, one of the many infectious diseases spread in the New World by Europeans. By September 1611, he was very ill. Membertou insisted on being buried with his ancestors, something that bothered the missionaries. However; Membertou soon changed his mind and requested to be buried among the French. He died on 18 September 1611. In his final words, he charged his children to remain devout Christians.
In 2007 Canada Post issued a $0.52 stamp (domestic rate) in its "French Settlement in North America" series in honour of Chief Membertou.
- Bumsted, J.M. (2007). A History of the Canadian Peoples. Canada: Oxford University Press. ISBN 0-19-542349-6
- Daniel N. Paul, We Were Not the Savages, (2000 ed.) p. 33
- Lescarbot, Marc (1617). Histoire de la Nouvelle-France [History of New France - Third Edition] (in French) (Troisième Edition enrichie de plusieurs choses singulieres, outre la suite de l'Histoire ed.).
- Lescarbot, Marc (2007-08-08). Histoire de la Nouvelle-France [History of New France - Third Edition] (E-Book) (in French) (Troisième Edition enrichie de plusieurs choses singulieres, outre la suite de l'Histoire ed.). Project Gutenberg Ebook #22268. Retrieved 2010-10-08.
- Sagard-Théodat, Gabriel (1636). Histoire du Canada et voyages que les frères mineurs recollects y on faicts pour la conversion des infidèles depuis l'an 1615 (in French) (Deuxième Partie ed.).
- Clint Goss (2011). "Membertou's Three Songs - Sheet Music for Native American Flute". Retrieved 2011-03-29.
Eric Thierry, La France de Henri IV en Amérique du Nord. De la création de l'Acadie à la fondation de Québec, Paris: Honoré Champion, 2008.