Below is Section 6 of Kenya Citizenship Act which deals with Renunciation of Kenyan citizenship
6. (1) If any citizen of Kenya of full age and capacity who is
also—
(a) a citizen of any country to which section 95 of the
Constitution applies, or of the Republic of Ireland; or
(b) a national of a foreign country,
makes a declaration in the prescribed manner of renunciation of
citizenship of Kenya, the Minister may cause the declaration to be
registered; and upon registration, that person shall cease to be a citizen
of Kenya.
(2) The Minister may refuse to register any such declaration if it
is made during any war in which Kenya may be engaged in if, in his
opinion, it is otherwise contrary to public policy; but notwithstanding the
refusal of the Minister, such person as aforesaid shall cease to be a citizen
Nationality Law: Renunciation of Kenyan Citizenship
The Kenya Citizenship Act
CHAPTER 170
THE KENYA CITIZENSHIPACT
ARRANGEMENT OF SECTIONS
Part I—Preliminary
Section
1—Short title.
2—Interpretation.
Part II—Citizenhip by Registration
3—Registration of persons of African descent.
4—Registration of minors.
5—Effect of registration as a citizen.
Part III—Renunciation and Deprivation of Citizenship
6—Renunciation of citizenship.
7—Effect of renunciation or deprivation of citizenship.
Part IV—Supplemental
8—Married women.
9—Decision of Minister to be final.
10—Manner of making applications.
11—Renunciation of citizenship of other
countries and declarations relating to residence.
12—Evidence.
13—Offences.
14—Regulations.
15—Inconsistency with Constitution.
16—Provisions relating to section 88 of the Constitution.
17—Provisions relating to section 92 (1) of the Constitution.
18—Provisions relating to section 97 of the Constitution.
SCHEDULE