Queen Khuit, who may have been the mother of Userkare (according to Jonosi and Callender) 
Queen Khent (or Khentkaus III). Known from a relief of Pepi I's mortuary temple. She may have been buried in a mastaba.
Weret-Imtes? This queen is mentioned in the autobiography of Wenis. It may be a reference to the title of the queen instead of her personal name. She was involved in a harem plot to overthrow Pepi, but apparently was caught before she succeeded. In the tomb of the official Wenis there is mention of “a secret charge in the royal harem against the Great of Sceptre”.
Teti is known to have had several children. He was the father of at least three sons and probably ten daughters. Of the sons, two are well attested, a third one is likely :
Tetiankh, "eldest King’s son", whose mastaba is located on the east side of Queen Iput’s funerary complex
Nebkauhor, with the beautiful name of Idu, "king’s eldest son of his body", buried in the mastaba of Vizier Akhethetep/Hemi, in King Unis’cemetery. He is most probably Teti’s son, born of Queen Iput I and buried in a fallen Vizier’s tomb, within the funerary complex of his maternal grandfather 
Piriform mace head inscribed with the cartouche of Teti, Imhotep Museum.
According to N. Kanawati, King Teti had at least 9 daughters, by a number of wives, and the fact that they were named after his mother, Sesheshet, allows to trace his family. At least three princesses bearing the name Seshseshet are designated as " king’s eldest daughter ", meaning that there were at least three different queens. It seems that there was a tenth one, born of a fourth queen as she is also designated as " king’s eldest daughter ".
Seshseshet whose beautiful name was Waatetkhéthor, married to Vizier Mereruka, in whose mastaba she has a chapel. She is designated as " king’s eldest daughter of his body ". She may have been the eldest daughter of Queen Iput I 
Seshseshet with the beautiful name of Idut, "king’s daughter of his body", who died very young at the beginning of her father’s reign and was buried in the mastaba of Vizier Ihy, in King Unis’cemetery. She is most certainly Teti’s daughter, born of Queen Iput I and buried within the funerary complex of her maternal 
Seshseshet called Nubkhetnebty, "king’s daughter of his body", wife of Vizier Kagemni, et represented in her husband’s mastaba. She was maybe also born of Queen Iout I 
Seshseshet, also called Sathor, married to Isi, resident governor at Edfu and also totled vizier. She also would have been born of Queen Iput I.
Lantern Slide Collection: Views, Objects: Egypt. Chapel, Tomb of Nefer-Seshem-Ptah. Sakkara. 6th Dynasty., n.d. Brooklyn Museum Archives
Seshseshet, with the beautiful name of Sheshit, " king’s eldest daughter of his body and wife of the overseer of the great court Neferseshemptah, and is depicted in her husband’s mastaba. As she is an eldest daughter of the king, she cannot be born of the same mother as Waatkhetethor and therefore may have been a daughter of Queen Khuit 
Seshseshet also called Sheshti, "king’s daughter of his body", married to the keeper of the head ornaments Shepsipuptah, and depicted in her husband’s mastaba.
Seshseshet with the beautiful name of Merout, entitled " king’s eldest daughter " but without the addition " of his body " and therefore born of a third, maybe a minor queen, and married to Ptahemhat 
Seshseshet, wife of Remni, "sole companion" and overseer of the department of the palace guards
Seshseshet, married to Pepyankh Senior of Meir 
the so-called " queen of the West Pyramid in King Pepy I cemetery. She is called " king’s eldest daughter of his body " and kings wife of Meryre mennefer (the name of Pepy I’s pyramid). Therefore she is a wife of King Pepi and most certainly his –half- sister  As she is also an eldest daughter of the king, her mother must be a fourth queen of Teti
During Teti's reign, high officials were beginning to build funerary monuments that rivaled that of the Pharaoh. His vizier, Mereruka, built a mastaba tomb at Saqqara which consisted of 33 richly carved rooms, the biggest known tomb for an Egyptian nobleman. This is considered to be a sign that Egypt's wealth was being transferred from the central court to the officials, a slow process that culminated in the end to the Old Kingdom.
Manetho states that Teti was murdered by his palace bodyguards in a harem plot, but he may have been assassinated by the usurper Userkare . He was buried in the royal necropolis at Saqqara. His pyramid complex is associated with the mastabas of officials from his reign. Teti's Highest date is his Year after the 6th Count 3rd Month of Summer day lost (Year 12 if the count was biannual) from Hatnub Graffito No.1. This information is confirmed by the South Saqqara Stone Annal document from Pepi II's reign which gives him a reign of around 12 years.
3rd "subsidiary" pyramid to Teti's tomb
Teti's mother was the Queen Sesheshet, who was instrumental in her son's accession to the throne and a reconciling of two warring factions of the royal family. Sesheshet lived between 2323 BC to 2291 BC. Egypt's chief archaeologistZahi Hawass, secretary general of the Supreme Council of Antiquities, announced, on November 11, 2008, that she was entombed, in a 4,300-year-old headless 5 metre (16-foot-tall) Saqqara most complete subsidiary pyramid. This is the 118th pyramid discovered thus far in Egypt, the largest portion of its 2 metres wide beautiful casing was built with a superstructure 5 metres high. It originally reached 14 metres, with sides 22 metres long.
The ruins of Teti's pyramid (Saqqara)
Pyramid texts from Teti I's pyramid at Saqqara
Once 5 stories tall, it lay beneath 23 feet (7 meters) of sand, a small shrine and mud-brick walls from later periods. The 3rd known "subsidiary" pyramid to Teti's tomb, was originally 46 feet (14 meters) tall and 72 feet (22 meters) square at its base, due to its walls having stood at a 51-degree angle. Buried next to the SaqqaraStep Pyramid, its base lies 65 feet underground and is believed to have been 50 feet tall when it was built.