Sina Ghami and Latif Ayodele died in Monday's road traffic accident which happened on a busy highway around lunchtime.
They were both described as being "integral members" of the boxer's team.
Joshua, a former two-time world heavyweight champion, suffered minor injuries as he travelled in the back of a black Lexus that hit a truck in Makun, Ogun State, about 30 miles from the country's biggest city, Lagos.
Ghami and Ayodele were also passengers in the Lexus.
Authorities said Joshua, 36, was taken to hospital for treatment along with another injured person.
Joshua and the other survivor are described by officials as being in a "stable" condition.
Police are investigating the cause of the accident.
'Shocking and devastating news'
Naming the two men who died, Joshua's spokesperson said in a statement: "It is with the deepest and most profound sadness that we confirm, following a road traffic accident in Lagos Nigeria earlier today, the death of Sina Ghami and Kevin 'Lateef' Ayodele.
"Both were close friends and integral members of Anthony's team. We respectfully ask that space and privacy be given to the families at this time while they process this truly shocking and devastating news."
The Nigerian President Bola Ahmed Tinubu said on X: "I have spoken with AJ to personally convey my condolences over the passing of his two close associates, Kevin Latif Ayodele and Sina Ghami in the recent accident.
"I wished him a full and speedy recovery, and prayed with him. AJ assured me he is receiving the best possible care."
A statement on X by Joshua's promoter Eddie Hearn, from Matchroom Boxing, also confirmed the victims' names, saying: "With profound sadness it has been confirmed that two close friends and team members Sina Ghami and Latif Ayodele have tragically passed away."
The crash happened on the Lagos-Ibadan Expressway near Sagamu, at about midday local time (11am UK time), according to the Nigerian federal road safety corps (FRSC).
Joshua is on holiday in Africa following his win over US YouTuber-turned-boxer Jake Paul in Miami just over a week ago.
How did the crash happen?
The FRSC said preliminary findings indicated the Lexus was "suspected to be travelling beyond the legally prescribed limit" and "lost control" while overtaking before crashing into the truck, which was parked by the side of the road.
"The primary causes of the crash being excessive speed and wrongful overtaking constitute serious traffic violations and remain among the leading causes of fatal road crashes on Nigerian highways," the corps said on X.
The boxer has Nigerian heritage
Joshua, who is the son of British-Nigerian parents, attended a boarding school in Ikenne, around 50 miles from where the crash happened, before returning to Britain at the age of 12.
Pictures released by the FRSC show the badly damaged Lexus that Joshua was travelling in and the red Sinotruck that it collided with.
Footage posted on social media shows the British ex-world heavyweight champion apparently wincing in pain as he is helped out of the wreckage by a crowd.
Other clips show him in an emergency vehicle, wearing only a pair of shorts, as he is driven away from the scene.
The crash happened just days after Joshua knocked out Jake Paul in the sixth round of their fight in Miami.
The fight marked the end of a 15-month hiatus for Joshua, who is expected to fight long-time rival Tyson Fury in 2026.
Sergei Lavrov, Moscow's long-serving foreign minister, said Kyiv launched the attack on Putin's home in the Novgorod region overnight on Sunday, but that all 91 drones used were shot down by Russian air defences.
Ukrainian President Volodymyr Zeleskyy hit back against the claims, calling them "lies".
Asked about the reports while welcoming Israeli Prime Minister Benjamin Netanyahu to his Mar-a-Lago estate in Florida on Monday, Mr Trump said it was "not good".
"I learned about it from President Putin today. I was very angry about it," he said, describing his second phone call with the Russian leader in as many days as "very good".
"It's a delicate period of time," he added. "This is not the right time. It's one thing to be offensive, because they're offensive. It's another thing to attack his house. It's not the right time to do any of that."
US 'hit' Venezuela docks
Taking questions from the media alongside Mr Netanyahu, Mr Trump also confirmed the US "hit" a dock area in Venezuela where he alleged drugs were loaded onto boats.
This would mark the first known time the US has carried out operations on land in Venezuela since a pressure campaign began against the government of President Nicolas Maduro several months ago.
"There was a major explosion in the dock area where they load the boats up with drugs. They load the boats up with drugs. We hit all the boats, and now we hit the area," Mr Trump said, without providing any further details.
It was not immediately clear what target was hit, nor which part of the US government acted.
Asked if the CIA had carried out the attack, Mr Trump said: "I don't want to say that. I know exactly who it was, but I don't want to say who it was."
Warning sent to Iran
With Mr Netanyahu arriving in Mar-a-Lago for talks concerning the Middle East, Mr Trump was quizzed on reports Iran is stepping up the rebuilding of its ballistic missile programme, despite the reintroduction of UN sanctions last month banning such activity.
"I hear that Iran is trying to build up again, and if they are, we're going to have to knock them down, we'll knock them down, we'll knock the hell out of them," Mr Trump said.
"But hopefully that's not happening. I heard Iran wants to make a deal. If they want to make a deal, that's much smarter.
"You know, they could have made a deal the last time, before we did a big attack on them."
He adds: "I think, again, they should make a deal. They want to make a deal. But sometimes that doesn't happen."
Hamas 'must disarm'
Mr Netanyahu is also seeking further US support in Gaza, where there has been little movement on the complex second phase of the Israel-Hamas truce, raising concerns that both sides are failing to take action to carry out the next phase of the deal.
More than 400 people have been killed in Gaza since that agreement, local officials say, while Israel has accused Hamas of ceasefire violations, including the delayed return of hostage remains - with one body still to be handed over.
Asked how quickly the ceasefire agreement can move to its second phase, Mr Trump said: "As quickly as we can, but there has to be a disarmament.
"We have to disarm with Hamas. It's one of the things we'll talk about, certainly, but there has to be a disarming of Hamas."
Sir Idris, 53, who is known for his roles in The Wire and Luther, is knighted for services to young people, having founded the Elba Hope Foundation.
He said: "I receive this honour on behalf of the many young people whose talent, ambition and resilience has driven the work of the Elba Hope Foundation.
"I hope we can do more to draw attention to the importance of sustained, practical support for young people and to the responsibility we all share to help them find an alternative to violence."
Torvill and Dean say honour is 'wonderful and humbling'
Dame Jayne and Sir Christopher, who took home the Olympic gold at the 1984 Winter Games and saw success at the World, European and British Champions, are made a Dame and Sir for services to ice skating and to voluntary service. They said the honour is "wonderful and humbling at the same time".
They are joined by Paul Elliott, one half of the Chuckle Brothers, who is made a Member of the Order of the British Empire (MBE), and Matt Lucas, half of the Little Britain comedy duo with David Walliams, who becomes an Officer of the Order of the British Empire (OBE).
Lionesses and Red Roses
The Lionesses feature heavily on the list after their Euros win in the summer. Captain Leah Williamson is made a Commander of the Order of the British Empire (CBE), while Alex Greenwood, Keira Walsh, Georgia Stanway and Ella Toone become MBEs.
The team's Dutch manager, Sarina Wiegman, who has won the Euros twice with England and once with the Netherlands, is awarded an honorary damehood, the Cabinet Office said.
Wiegman said: "I would like to express my sincere gratitude for this honour. When I first arrived in England, I could never have imagined the respect and warmth I've experienced from the English people. I deeply thank the fans for their support."
Members of England Women's Rugby World Cup winning squad are also featured, with Marlie Packer and Zoe Aldcroft becoming OBEs, along with coach John Mitchell. Their teammates Ellie Kildunne, Sadia Kabeya and Megan Jones are made MBEs after the Red Roses defeated Canada in the final in September.
Three-time London Marathon winner Paula Radcliffe, who held the women's marathon record for 16 years, is made an OBE.
'Best thing that's ever happened to me - and I've been in Star Wars'
Also made OBEs are presenter and author Richard Osman, actor Warwick Davis and broadcaster Gabby Logan. The Kumars At No 42 actress Meera Syal, 64, becomes a Dame.
Osman, 55, author of The Thursday Murder Club book series, said he was "absolutely thrilled" with the honour, while Davis, also 55, said: "This is the best thing that's ever happened to me and I've been in Star Wars."
Wicked star Cynthia Erivo is made an MBE for services to music and drama, while football commentator Clive Tyldesley becomes an OBE for services to sports broadcasting and to charity.
Writer Roy Clarke, who created the sitcoms Last Of The Summer Wine, Open All Hours and Keeping Up Appearances, becomes a knight.
Oldest Horizon IT scandal victim and D-Day veteran honoured
A woman thought to be the oldest victim of the Horizon IT scandal, 92-year-old Betty Brown, has said it was a "shocker" to have been made an OBE for seeking justice for subpostmasters.
D-Day veteran Mervyn Kersh, 101, said it was a "wonderful thing" to be awarded a British Empire Medal (BEM) for services to Holocaust remembrance and education.
The oldest person on the list is 102-year-old John Hearn, one of four centenarians included, who receives a BEM for services to Judo and to the community in northeast England.
The youngest recipient is 20-year-old Olympic gold medal-winning sports climber Toby Roberts, from Elstead in Surrey, who becomes an MBE.
'The very best of Britain'
Prime Minister Sir Keir Starmer said: "This year's Honours list celebrates the very best of Britain - people who put the common good ahead of themselves to strengthen communities and change lives.
"Their quiet dedication speaks to the decent, compassionate country we are proud to be. On behalf of the whole nation, thank you - and congratulations to everyone recognised today."
"Abhorrent" social media posts by Alaa Abd El-Fattah emerged after he returned to the UK on Boxing Day following several years of imprisonment in Egypt.
Ms Cooper, the foreign secretary, said successive prime ministers were not briefed on the historic tweets, which date back as far as 2010, and civil servants in charge of the case were also "unaware" of them.
The activist has since apologised "unequivocally" for his "shocking and hurtful" social media posts, in which he appears to call for violence against "Zionists" - but said some had been "completely twisted".
Both the Conservatives and Reform UK have suggested he should have his British citizenship stripped for the posts - though it is understood there are no current plans for this, and the law does not appear to provide grounds to deport him.
In a letter to the chair of the Foreign Affairs Committee, Dame Emily Thornberry, Ms Cooper said long-standing procedures and due diligence arrangements had been "completely inadequate" in the case.
"In the context of rising antisemitism, and recent horrific attacks against Jewish people in this country and around the world, I am deeply concerned that the unexpected emergence of these historical tweets - coming alongside the social media posts that I and other senior politicians sent on Boxing Day welcoming the conclusion of this long-running case and Mr El Fattah's reunion with his family - have added to the distress felt by Jewish communities in the UK, and I very much regret that," she wrote.
"I have asked the permanent under secretary as a matter of urgency to review the serious information failures in this case and more broadly the systems that are in place within the department for conducting due diligence on the individual high-profile consular and human-rights cases for which the FCDO is responsible, to ensure that those systems are functioning properly for the future, and that all necessary lessons are learned."
Read more:
Two people killed in Anthony Joshua car crash named
Trump offered Ukraine 15-year security guarantee, Zelenskyy says
Mr Abd El-Fattah was a leading voice during Egypt's 2011 Arab Spring uprising and went on hunger strikes in prison.
He was most recently detained in September 2019 and sentenced to five years in prison in December 2021 on charges of spreading false news.
Egyptian President Abdel Fattah el-Sisi pardoned the activist earlier this year and he flew to the UK to reunite with his young son, who lives in Brighton, last week.
He had been granted UK citizenship in December 2021 under Boris Johnson, reportedly through his UK-born mother.
No 10 has defended the government's handling of the case, with the prime minister's official spokesperson saying: "We welcome the return of a British citizen unfairly detained abroad, as we would in all cases and as we have done in the past.
"That is central to Britain's commitment to religious and political freedom. That said, it doesn't change the fact that we have condemned the nature of these historic tweets and we consider them to be abhorrent, and we've been very clear about that."
In a statement, Mr Abd El-Fattah said: "I unequivocally apologise.
"(The posts) were mostly expressions of a young man's anger and frustrations in a time of regional crises (the wars on Iraq, on Lebanon and Gaza), and the rise of police brutality against Egyptian youth.
"I particularly regret some that were written as part of online insult battles with the total disregard for how they read to other people. I should have known better."
Some moments dominated the headlines for weeks, while others flew by, but had just as much of an impact.
As the year draws to a close, here is an opportunity to put your knowledge of the major stories of the year to the test.
How closely were you following it all?
Find out in the quiz below...




