Kenya profile - Timeline
A chronology of key events:
c 3.3 million BC - Evidence of some of the earliest human tools have been found in Kenya, suggesting that it was the cradle of humanity from which descendents moved out to populate the world.
600 - Arabs begin settling coastal areas, over the centuries developing trading stations which facilitated contact with the Arab world, Persia and India.
16th century - Portuguese try to establish foothold on Kenyan coast but are driven off by Swahili states and Omani Arabs by late 17th century.
1830s - Omani Arabs consolidate control of coast.
1895 - Formation of British East African Protectorate.
Early 1900s - British settlers move into highlands, railway built from Mombasa to Lake Victoria.
1920 - East African Protectorate becomes crown colony of Kenya - administered by a British governor.
1944 - Kenyan African Union (KAU) formed to campaign for African independence. First African appointment to legislative council.
1947 - Jomo Kenyatta becomes KAU leader.
1952 - Secret Kikuyu guerrilla group known as Mau Mau begins violent campaign against white settlers. State of emergency declared. Kenyatta arrested.
1953 - Kenyatta charged with management of Mau Mau and jailed. KAU banned.
1956 - Mau Mau rebellion put down after thousands killed - mainly Africans.
1959 - Kenyatta released from jail but under house arrest.
1960 - State of emergency ends. Britain announces plans to prepare Kenya for majority African rule. Kenya African national Union (Kanu) formed by Tom Mboya and Oginga Odinga.
1961 - Kenyatta freed and assumes presidency of Kanu.
1963 - Kenya gains independence, with Kenyatta as prime minister.
1964 - Republic of Kenya formed. Kenyatta becomes president and Odinga vice-president.
1966 - Odinga, a Luo, leaves Kanu after ideological split, forms rival Kenya People's Union (KPU).
1969 - Assassination of government minister Tom Mboya sparks ethnic unrest. KPU banned and Odinga arrested. Kanu only party to contest elections.
1974 - Kenyatta re-elected.
Moi era begins
1978 - Kenyatta dies in office, succeeded by Vice-President Daniel arap Moi.
1982 June - Kenya officially declared a one-party state by National Assembly.
1982 August - Army suppresses air force coup attempt. Private Hezekiah Ochuka rules for about six hours.
1987 - Opposition groups suppressed. International criticism of political arrests and human rights abuses.
1990 - Death of the foreign minister, Robert Ouko, in suspicious circumstances leads to increased dissent against government.
1991 August - Forum for the Restoration of Democracy (Ford) formed by six opposition leaders, including Oginga Odinga. Party outlawed and members arrested. Creditors suspend aid to Kenya amid fierce international condemnation.
1991 December - Special conference of Kanu agrees to introduce a multi-party political system.
1992 - Approximately 2,000 people killed in tribal conflict in the west of the country.
1992 August - Ford splits into two factions - Ford-Asili (led by ex-government minister Kenneth Matiba) and Ford-Kenya (led by Odinga).
1992 December - Moi re-elected in multi-party elections. Kanu wins strong majority.
1994 - Odinga dies. Opposition groups form coalition - the United National Democratic Alliance - but it is plagued by disagreements.
1995 - New opposition party - Safina - launched by palaeontologist Richard Leakey. Party refused official registration until November 1997.
1997 December - Moi wins further term in widely-criticised elections. His main opponents are former vice-president Mwai Kibaki and Raila Odinga, son of Oginga Odinga.
1998 August - Al-Qaeda operatives bomb the US embassy in Nairobi, killing 224 people and injuring thousands.
2002 July - Some 200 Maasai and Samburu tribespeople accept more than $7m in compensation from the British Ministry of Defence. The tribespeople had been bereaved or maimed by British Army explosives left on their land over the last 50 years.
2002 November - Terror attack on Israeli-owned hotel near Mombasa kills 10 Kenyans and injures three Israelis. A simultaneous rocket attack on an Israeli airliner fails. A statement - purportedly from al-Qaeda - claims responsibility.
2002 December - Elections. Mwai Kibaki wins a landslide victory, ending Daniel arap Moi's 24-year rule and Kanu's four decades in power.
2003 January - Government bill proposes anti-corruption commission. Moi critic John Githongo appointed anti-graft chief.
2003 December - Government decides to grant former president Daniel arap Moi immunity from prosecution on corruption charges.
2004 March-July - Long-awaited draft of new constitution completed. Document requires parliament's approval and proposes curbing president's powers and creating post of prime minister. But deadline for enactment is missed.
2004 October - Kenyan ecologist Wangari Maathai wins the Nobel Peace Prize.
2005 February - Corruption takes centre stage when it is claimed that graft has cost Kenya $1bn under Kibaki. Leading anti-graft official John Githongo resigns. International donors voice unease.
2005 July - Parliament approves a draft constitution after days of violent protests in Nairobi over aspects of the draft which demonstrators say give too much power to in the president's hands.
2005 November-December - Voters reject a proposed new constitution in what is seen as a protest against President Kibaki. The president replaces his cabinet; some nominees reject their appointments.
2007 December - Disputed presidential elections lead to violence in which more than 1,500 die.
The government and opposition come to a power-sharing agreement in February and a cabinet is agreed in April.
2008 October - Report into post-election clashes calls for international tribunal to try those implicated in violence. Many political leaders are reluctant to implement recommendations, with some arguing that prosecutions could trigger further clashes.
2009 October - The government says it will co-operate with the International Criminal Court (ICC) to try key suspects in post-election violence.
2010 July - Kenya joins its neighbours in forming a new East African Common Market, intended to integrate the region's economy.
2010 August - New constitution designed to limit the powers of the president and devolve power to the regions approved in referendum.
2011 April - Truth commission begins public probe into 3,000 killings at Wagalla airstrip during a 1984 crackdown on ethnic Somalis, a hushed-up chapter in Kenya's history.
Six politicians appear before the International Criminal Court in The Hague, accused of links to 2007-8 post-election violence.
2011 June-September - East Africa hit by worst drought in 60 years.
2011 August-September - Suspected Somali militants raid Kenyan coastal resorts and a refugee camp, targeting foreigners.
Troops in Somalia
2011 October - Kenyan troops enter Somalia to attack rebels they accuse of being behind several kidnappings of foreigners on Kenyan soil. Kenya suffers several apparent reprisal attacks.
2012 January - International Criminal Court rules that several prominent Kenyans must stand trial over the 2007 post-election violence.
2012 March - Oil discovered. President Kibaki hails it as a ''major breakthrough''.
2012 May - More than 30 people are injured in an attack on a Nairobi shopping centre, allegedly by Somalia's al-Shabab Islamist militia.
2012 July - Britain acknowledges that its colonial administration tortured detainees during the Mau Mau uprising. Veterans are claiming damages in the High Court in London.
Outbreaks of violence
2012 August-September - More than 100 people are killed in communal clashes over land and resources Coast Province. Junior minister Dhadho Godhana is charged with incitement. He denies the charge.
Five people die in riots by Muslim protesters in Mombasa after the shooting of preacher Aboud Rogo Mohammed, accused by the UN of recruiting and funding al-Shabab Islamist fighters in Somalia.
2012 December - Deputy PM Uhuru Kenyatta and former minister William Ruto - bitter political rivals facing trial at the International Criminal Court over the 2007 post-election violence - confirm that are forming an alliance for the 2013 election.
2013 March - Uhuru Kenyatta, the son of Kenya's first president, wins presidential election with just over 50% of the vote. A challenge to the results by his main rival, Prime Minister Raila Odinga, is rejected by the Supreme Court.
2013 June - The British government says it sincerely regrets the torture of thousands of Kenyans during the suppression of the Mau Mau insurgency in the 1950s and promises £20m in compensation.
2013 September - Deputy President William Ruto pleads not guilty at the International Criminal Court to crimes against humanity charges over the 2007 post-election violence.
2013 September - Somali al-Shabab militants seize the Westgate shopping mall in Nairobi and kill more than 60 people, saying they want Kenya's military to pull out of Somalia.
2014 June - At 48 people die after Islamist militants attack hotels and a police station in Mpeketoni, near the island resort of Lamu.
2014 September - Kenya revises the way it calculates growth, making the economy 25% bigger than previously thought - and fourth biggest in sub-Saharan Africa.
2014 December - Prosecutors at the International Criminal Court drop charges against President Kenyatta over the 2007 post-election violence, citing insufficient evidence.
2015 April - Al-Shabab militants carry out a massacre at Garissa University College in northwest Kenya, killing 148 people.
2015 July - Barack Obama praises Kenya's progress but urges action to improve gay rights, as he make his first visit to his father's homeland as US president.
2016 January - Al-Shabab claims to have killed more than 100 Kenyan soldiers in a dawn raid on a base in southern Somalia. The Kenyan authorities give no casualty figure, drawing accusations of a cover-up.
2016 December - A rights group says anti-terror police have carried out at least 81 extrajudicial killings in the mainly Muslim coastal region since 2012.
2017 February - Government declares a drought affecting a large part of the country to be a national disaster.
2017 April - Veteran conservationist and author Kuki Gallmann is shot and wounded on her estate in Laikipia region, where there have been numerous clashes as livestock is moved onto private land in search of grazing.
2017 May - Eastern regional leaders warn that parts of Kenya could be taken over by the Islamist group Al Shabaab.
A new multi-billion-dollar railway line linking Mombasa to the capital Nairobi is opened - the country's biggest infrastructure project since independence.
2017 July - Three-month curfew is declared in coastal areas which have been hit by Al Shabaab militants.
2017 August-October - President Kenyatta is declared winner of the presidential election in August as well as the re-run in October.
2018 January - Opposition leader Raila Odinga swears himself in as "people's president" in an unofficial ceremony attended by a large crowd in Nairobi.