About 62 people have died. This page will be updated as new information comes to light.
Kenya
Ruhila Adatia-Sood
Ruhila Adatia-Sood and her husband Ketan Sood
Ruhila Adatia-Sood and her husband were married in January last year
Ruhila Adatia-Sood, a popular TV and radio personality, was in the rooftop car park of the Westgate shopping centre where she was part of a team hosting a cooking competition for small children at the time of the attack.
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Food lover, thrill seeker and a bungee jump away from sanity”
Ruhila Adatia-Sood on Twitter
She was married to Ketan Sood, who worked for USAid in Nairobi, in January 2012 in what has been described as Swahili-themed wedding.
She was six months' pregnant with their first child when she died.
According to reports, Ms Adatia-Sood was rushed to Aga Khan Hospital but was pronounced dead on arrival.
She was "known throughout Kenya for her passion, vibrancy, and gift for making people smile", USAid administrator Rajiv Shah said in a statement.
On her Twitter account, she described herself as a "food lover, thrill seeker and a bungee jump away from sanity".
A graduate of South Africa's Rhodes University in Grahamstown, her three elder sisters described her as "a go-getter since childhood".
She was a presenter on Radio Africa media group's East FM and said she hosted entertainment news on Kiss TV, E-News, Kiss 100 and X-FM.
On Saturday she was tweeting Instagram photos of those attending the cooking competition in the car park.
Her colleague, Kamal Kaur, also a radio presenter, was helping with the competition and was at the event with her two young children when she said they all came under attack from a gunman.
"A grenade was thrown at us and it went off. At the same time he shot at us. The bullet missed my son by just an inch; it bounced off the wall and hit the boy who was next to him," she told the BBC.
"Then he [the attacker] came out again with his big rifle. My daughter kept whispering to everybody: "Pretend you're dead! Pretend you're dead! He won't shoot...pretend you're dead."
Ms Kaur and her children managed to escape - her children were hit in their legs by shrapnel.
"My daughter is very devastated because my colleague Ruhila... she was six months pregnant and she lost her life and we're very devastated about that... Very devastated about that," Ms Kaur said.
Mbugua Mwangi and Rosemary Wahito
President Uhuru Kenyatta's nephew Mbugua Mwangi and his fiancee Rosemary Wahito are among the many Kenyans killed in the attack on the Westgate shopping centre.
Addressing the nation on Saturday, Uhuru Kenyatta said:
"I ask God to give you comfort as you confront this tragedy, and I know what you feel having also lost very close family members in this deadly attack."
According to the Irish Independent newspaper, Mr Mwangi's mother, Catherine Muigai Mwangi, had recently returned home from Dublin following a six-year posting as Kenya's ambassador to Ireland.
Mr Kenyatta's elder sister Christine Wambui Pratt had also been at Westgate at the time of the attack, but managed to escape.
Mitul Shah
Mitul Shah
Mitul Shah ran his company's football team, which plays in the second division
A sales and marketing director of Bidco, a company that primarily makes cooking oil, Mitul Shah was also up in the rooftop car park at the cooking competition.
"He died trying to save stranded children. He died as a hero," Half Jadhe Half Kyuk wrote on the KenyaList.com message board.
He described Mitual Shah as a "die-hard Manchester United fan".
He was also chairman of Bidco's football team, which plays in the second division.
Other Kenyans:
Vaya sisters-in-law, Joyti Kharmes Vaya and Maltiben Ramesh Vaya
Joyti Kharmes Vaya was a 37-year-old mother of three, whose husband worked for Victoria Commercial bank, it said.
Maltiben Ramesh Vaya was aged 41, a mother of two, who worked for the Bank of Baroda.
"Both daughters-in-law succumbed to injuries related to gunshot wounds in yesterday's terror attack in Nairobi's Westgate Mall," a message on Facebook posted by a Pattni Brotherhood community in Nairobi said.
Nehal Vekaria's funeral cremation ceremony
Nehal Vekaria, a 16-year-old student, has been cremated
Nehal Vekaria: a 16-year-old student. On Sunday, her family held her funeral where she was cremated.
Australia and Holland
Ross Langdon and Elif Yavuz
Ross Langdon and Elif Yavuz were expecting their first child next month
Ross Langdon an Australian architect, who grew up in Tasmania and had dual British nationality, died in the shootout along with his Dutch girlfriend, Elif Yavuz, a 33-year-old health worker and Harvard graduate.
Mr Langdon co-founded Regional Associates and worked in East Africa on sustainable architecture projects.
"Profoundly talented and full of life, Ross enriched the lives of all those around him," the company said on its website.
"Ross's leadership on projects throughout East Africa was inspirational, and he will be will be very, very sorely missed by us all."
Peter Adams, a family friend in Tasmania, paid tribute to the couple on his blog: "There just was no dark side to Ross that I ever saw in the 20 or so years I knew him".
"We all took immense pride in both his architectural abilities and his very generous, positive, and loving personality."
Amongst his achievements was his "pro-bono" design for an Aids hospital in Kenya, Mr Adams said.
"In Uganda he designed and supervised a unique eco-village employing only local labour," he added.
Ms Yavuz, who was expecting their first child in two weeks' time, worked for the Bill and Melinda Gates Foundation, Mr Adams said.
Canada
Annemarie Desloges
A 29-year-old Canadian diplomat who served at the country's high commission in Kenya as a liaison officer with the Canada Border Services Agency.
Her husband, Robert Munk, was injured in the attack but has since been released from hospital, officials said.
Another Canadian had died, but has not been named.
Ghana
Kofi Awoonor
Kofi Awoonor
The 78-year-old Ghanaian was a renowned poet - regarded as literary royalty at home, where his poetry and novels are considered essential reading at schools.
He was in Nairobi as a participant in the Storymoja Hay Festival and was due to perform on Saturday evening.
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A writer, politician and traditionalist with great wit, sense of humour and very well-spoken. He will be sorely missed”
John Mahama
Ghana's president
He became known for his poetry in the 1960s and was inspired by the singing and oral storytelling of his Ewe ethnic group - his first published collection was called Rediscovery.
In the 1970s he taught at several universities in the US, returning to Ghana in 1975 to take up a position as head of English at the University of Cape Coast.
Within months he was arrested and detained for a year on suspicion of treason during the military rule of Col Ignatius Acheampong.
This provoked protests from Amnesty International and writers such as the beat poet Allen Ginsberg.
He became more politically active after his incarceration, serving as Ghana's ambassador to Brazil in the 1980s, and - after the country's return to multi-party democracy - as ambassador to the UN.
Ghana's President John Mahama said he was shocked by such a sad twist of fate: "A writer, politician and traditionalist with great wit, sense of humour and very well-spoken. He will be sorely missed..."
Mr Awoonor's son was with him in Nairobi and was shot in the shoulder during the attack.
India
Sridhar Natarajan
The 40-year-old who died in Westgate was working for a pharmaceutical firm in Nairobi, Indian external ministry spokesman Syed Akbaruddin said on Twitter.
He was from Tamil Nadu, in southern India.
Paramshu Jain
The eight-year-old son of a branch manager for the Bank of Baroda also tragically died in the mall, Mr Akbaruddin said.
Peru
Juan Jesus Ortiz
A doctor and former deputy head of the Kenyan branch of the UN children's fund, Juan Jesus Ortiz was at the shopping centre with his 13-year-old daughter Juanita.
The 63-year-old died at the scene, his daughter was shot in the leg and hand and required surgery but is expected to survive, his son, Ricardo Ortiz, told Peru's RPP radio, the AFP news agency reports.
South Korea
Kang Moon-hee
The 38-year-old was fatally wounded from gunshot wounds and shrapnel from a grenade, South Korean's Yonhap news agency reported.
Sources told the agency she died while being treated at a hospital on Sunday.
Her husband, a British citizen, has received surgery for a gunshot wound and is reportedly currently in stable condition.
According to AFP, the couple had only recently moved to Nairobi from Dubai.
Other nationals
China: China's official news agency reported that a 38-year-old Chinese woman had been killed - her teenage son was injured.
France: A mother and daughter were "executed in the parking lot" of Westgate, Helene Conway-Mouret, the French minister in charge of nationals living abroad, told private French channel BFM-TV.
South Africa: One national has died at Westgate, officials said.
UK: The Foreign Office said four Britons, including Ross Langdon, had died and their next of kin had been informed.
Majority of victims are Indians or PIOs.