Constitution as adopted on 12 December 1963.
2. Any person who is arrested or detained shall be informed as soon as reasonably practicable, in a language that he understands, of the reasons for his arrest or detention.
Subject to section 35, a person shall be qualified to be elected as a member of the National Assembly if, and shall not be qualified unless, at the date of his nomination for election...
(c) he is able to speak and, unless incapacitated by blindness or other physical cause, to read the Kiswahili and English languages well enough to take an active part in the proceedings of the National Assembly;
1. Subject to the provisions of this section the official languages of the National Assembly shall be Kiswahili and English and the business of the National Assembly may be conducted in either or both such languages.
2. Every bill, including the memorandum accompanying a bill, every act of Parliament whenever enacted, all other actual or proposed legislation under the authority of an act of Parliament, all financial resolutions and documents relating thereto, and every actual or proposed amendment of any of the foregoing, shall be written in English.
3. In all proceedings of the National Assembly which involve the discussion of any of the following matters, that is to say a bill, including the memorandum accompanying a bill, any act of Parliament, any other legislation whether actual or proposed, any financial resolution or document relating thereto, or any actual or proposed amendment thereof, the wording of every such matter shall, as occasion requires, be quoted in English.
2. Every person who is charged with a criminal offence...
(b) shall be informed as soon as reasonably practicable, in a language that he understands and in detail of the nature of the offence charged;...
(f) shall be permitted to have without payment the assistance of an interpreter if he cannot understand the language used at the trial of the charge.
Any person who...
(e) satisfied the Minister that he has an adequate knowledge of the Swahili language;
shall be eligible, upon making application in such manner as may be prescribed by or under an act of Parliament, to be naturalised as a citizen of Kenya, and the Minister may grant a certificate of naturalisation to any such person who so applies.
Text of the Constitution