The new constitution of Kenya was promulgated on August 27, 2010, which introduced a new system of government with the creation of 47 counties, each led by a governor. Here are the names of the first governors of the 47 counties of Kenya under the new constitution:
- Mwangi wa Iria – Murang’a County
- Joshua Irungu – Laikipia County
- Isaac Ruto – Bomet County
- Jack Ranguma – Kisumu County
- Samuel Ragwa – Tharaka-Nithi County
- Ali Hassan Joho – Mombasa County
- William Kabogo Gitau – Kiambu County
- Jackton Tonui – West Pokot County
- Samuel Ole Tunai – Narok County
- Ahmed Abdullahi – Wajir County
- Paul Chepkwony – Kericho County
- Kinuthia Mbugua – Nakuru County
- Ukur Yatani – Marsabit County
- David Nkedianye – Kajiado County
- Salim Mvurya – Kwale County
- Nathif Jama – Garissa County
- Godana Doyo – Isiolo County
- Jackson Mandago – Uasin Gishu County
- Cyprian Awiti – Homa Bay County
- Evans Kidero – Nairobi County
- Martin Wambora – Embu County
- Moses Akaranga – Vihiga County
- Benjamin Cheboi – Baringo County
- James Ongwae – Kisii County
- Cornel Rasanga – Siaya County
- Peter Munya – Meru County
- Ali Roba – Mandera County
- Nderitu Gachagua – Nyeri County
- Alex Tolgos – Elgeyo Marakwet County
- Hassan Ali Joho – Mombasa County
- Wycliffe Oparanya – Kakamega County
- Patrick Khaemba – Trans Nzoia County
- Isaac Ruto – Bomet County
- Alfred Mutua – Machakos County
- Joshua Chepchieng – Baringo County
- Okoth Obado – Migori County
- Godfrey Oparanya – Kakamega County
- Martin Nyaga Wambora – Embu County
- Samuel Kuntai Ole Tunai – Narok County
- Granton Samboja – Taita Taveta County
- Francis Kimemia – Nyandarua County
- Lee Kinyanjui – Nakuru County
- John Lonyangapuo – West Pokot County
- Anyang Nyong’o – Kisumu County
- Ali Korane – Garissa County
- Anne Waiguru – Kirinyaga County
- Mike Sonko – Nairobi County