January

• January 1–10 people die when a bus veers off-road in Ngarariga, near Nairobi^[1]
• January 4 - A delegation led by Kenyan Prime Minister Raila Odinga fails to solve the 2010–2011 Ivorian crisis^[2]
• January 4 - The Minister of Industrialisation Henry Kosgey gives up his cabinet post. Kosgey is subject to corruption investigations and also is one of six Kenyans charged by the International Criminal Court^[3]
• January 27 - Simon Mbugua of PNU loses his Kamukunji Constituency parliamentary seat as the 2007 election result was annulled by a court in January 2011 ^[4]
• January 31 - The Commission on the Implementation of Constitution declares unconstitutional the recent naming of Chief Justice and other top juridical posts by the President Mwai Kibaki^[5]

February

• February 9 - Ten people die as a bus collides with a truck in Sachangwan along the Nakuru-Eldoret highway ^[6]
• February 12 - Nine people die as a matatu and a bus collide at the Matunda bridge along the Kitale-Webuye road.^[7]
• February 16 - Joseph Gitari of PNU won the Kirinyaga Central Constituency parliamentary by-election ^[8]
• February 18 - Bonny Khalwale of New Ford Kenya loses his Ikolomani Constituency parliamentary seat as the High Court cites electoral malpractice in the 2007 election^[9]

March

• March - Thousands of residents flee Mandera town as fighting between Somali militia escalates in the area ^[10]
• March 9 - The International Criminal Court summons six previously named Kenyans to appear at the court in the Hague on April 7, 2011. Meanwhile, a faction of Kenyan government, including President Mwai Kibaki and Vice President Kalonzo Musyoka are calling for ICC to drop the cases.^[11] See also: International Criminal Court investigation in Kenya

September

• September 12 - Over 100 people die in a pipeline fire in Sinai slum, Nairobi

October

• October 16 - Kenyan Defense Forces enter southern Somalia as part of Operation Linda Nchi. The KDF intervened to provide a buffer between terrorist group Al-Shaabab and the Kenyan Border. The forces remain in Kenya until 31 May 2012.

January - March

• January 1 - Lessa Lassan, musician,^[12]
• January 6 - Duncan Nyamari (aka Alfayo), 25, actor of Mheshimiwa drama series, shot dead ^[13]
• March 12 - Paul Kiptoo arap Koech, politician ^[14]
• March 15 - Musa Juma, 42, musician, pneumonia ^[15]

April - June

• May 16 - Samuel Wanjiru, 24, Olympic gold medal-winning marathon runner, fall from balcony.

July - September

• July 31 - Habel Kifoto. musician, bandleader of Maroon Commandos, suspected heart failure ^[16]
• September 25 - Margaret Ogola, 53, writer ^[17]
• September 25 - Wangari Maathai - 71, Environmental and human rights activist, Nobel Peace Prize laureate (2004), cancer

January - March

• February 12 - Kenya Harlequins retains the Kenya Cup rugby title ^[18]
• February 18 - Mary Keitany sets a new World Half marathon record at the Ras Al Khaimah Half Marathon (time 1:05:50 hours) ^[19]
• February 19-March 20 - Kenya participated the 2011 Cricket World Cup in, but lost all their six matches
• February 20 - The 2010 FKL Cup winners Sofapaka beats league champions Ulinzi Stars 1-0 to retain the Kenya Supercup^[20]
• March 6 - Kenya wins all categories at the 2011 African Cross Country Championships in Cape Town, South Africa. John Mwangangi and Mercy Cherono won the men's and women's titles, respectively ^[21]

April - June

July - September

• September 25 - Patrick Makau wins Berlin Marathon setting a new marathon World record. Florence Kiplagat won the Women's race.