The Constitution of the Federal Republic of Nigeria 1999 (as amended) is the supreme law of Nigeria. It establishes the structure of government, defines the powers of the Federation and its component States, protects fundamental rights and provides the legal framework within which public institutions exercise their powers.

The Constitution of the Federal Republic of Nigeria 1999 is therefore essential reading for lawyers, judges, public officers, politicians, students, businesses and every Nigerian seeking to understand their legal rights and obligations.

The Constitution has been altered several times since 1999, including the Fifth Alteration Acts of 2023. A current constitutional analysis should therefore be based on the Constitution as altered, rather than relying solely on an older unamended version.

Below are 20 constitutional provisions and principles that are particularly important in Nigerian law and practice.

1. The Constitution Is the Supreme Law

The starting point of Nigerian constitutional law is section 1 of the Constitution.

The Constitution provides that it is supreme and binding on all authorities and persons throughout Nigeria.

It also provides that where another law is inconsistent with the Constitution, the Constitution prevails and the other law is void to the extent of the inconsistency.

This principle has enormous practical importance.

An Act of the National Assembly, a State law, subsidiary legislation, administrative decision or governmental action cannot validly override a constitutional provision.

2. Sovereignty Belongs to the People

The Constitution establishes Nigeria as a sovereign state and recognises the authority of the people as the foundation of government.

The constitutional framework provides for government through elected representatives and democratic institutions.

This principle is important because public authority is not exercised as a matter of personal ownership by political office holders. Government officials exercise powers conferred by the Constitution and other laws.

3. Nigeria Is a Federation

The Constitution establishes the Federation of Nigeria and recognises its component States and the Federal Capital Territory.

The constitutional structure distributes legislative, executive and judicial responsibilities between the Federation and the States.

This federal arrangement is fundamental to understanding Nigerian public law.

Questions concerning whether a matter falls within federal or State competence frequently require careful examination of the Constitution, particularly the legislative powers of the National Assembly and State Houses of Assembly.

4. The Constitution Defines the Legislative Powers of Government

The National Assembly does not possess unlimited legislative power.

The legislative powers of the Federation are defined by the Constitution.

Section 4 of the Constitution deals with legislative powers and identifies matters upon which the National Assembly may make laws.

The Constitution also provides for the legislative powers of State Houses of Assembly.

This division of legislative authority is particularly important in constitutional disputes concerning whether a federal or State legislature has competence to enact a particular law.

5. Executive Power Is Constitutionally Defined

The Constitution establishes the executive arm of government and defines the powers of the President and Governors.

At the federal level, section 5 deals with executive powers.

Executive authority must therefore be exercised within constitutional and statutory limits.

The existence of an executive office does not mean that every action taken by an executive authority is automatically lawful. The source, scope and manner of exercising the power must be considered.

6. Judicial Power Belongs to the Courts

The judiciary is constitutionally recognised as an independent arm of government.

Section 6 of the Constitution vests judicial powers in the courts established for the Federation and the States.

The Constitution also identifies the courts to which judicial powers relate and preserves the inherent powers and sanctions of courts of law.

This provision is fundamental to jurisdiction and the administration of justice.

As the Supreme Court has recognised, section 6 does not itself confer unlimited jurisdiction on a court; jurisdiction must be found in the Constitution or another applicable law. This distinction is important in litigation.

7. The Fundamental Rights Chapter Protects Individuals

Chapter IV of the Constitution contains the fundamental rights recognised and protected under Nigerian constitutional law.

These include:

• right to life;
• right to dignity of the human person;
• right to personal liberty;
• right to fair hearing;
• right to privacy and family life;
• freedom of thought, conscience and religion;
• freedom of expression;
• freedom of assembly and association;
• freedom of movement; and
• freedom from discrimination.

These rights are among the most frequently litigated constitutional provisions in Nigeria.

8. The Right to Life Is Constitutionally Protected

Section 33 of the Constitution protects the right to life.

The Constitution provides that every person has a right to life and no one shall be deprived intentionally of his life except in the circumstances recognised by the Constitution.

The provision is subject to carefully defined constitutional exceptions.

Because the right to life is fundamental, actions by State authorities that affect life and physical security may raise serious constitutional questions.

9. Everyone Has a Right to Dignity

Section 34 protects the dignity of the human person.

It prohibits torture and inhuman or degrading treatment or punishment and protects individuals from slavery and forced or compulsory labour, subject to the constitutional provisions.

The right to dignity is particularly relevant in cases involving:

• police treatment;
• detention;
• prison conditions;
• torture;
• degrading treatment;
• forced labour; and
• unlawful treatment by public authorities.

10. Personal Liberty Is a Fundamental Right

Section 35 of the Constitution protects the right to personal liberty.

A person cannot ordinarily be deprived of liberty except in accordance with a procedure permitted by law.

The section also contains safeguards relating to arrest and detention.

These include requirements concerning informing a person of the reason for arrest and the person’s right to consult a legal practitioner.

The constitutional protection of personal liberty is particularly important in criminal investigations, police arrests, detention and bail proceedings.

11. Fair Hearing Is a Constitutional Requirement

One of the most important provisions for litigation is section 36 of the Constitution.

It guarantees a fair hearing within a reasonable time by a court or other tribunal established by law and meeting the constitutional requirements of independence and impartiality.

The provision applies to the determination of civil rights and obligations and to criminal proceedings.

Fair hearing is not merely a procedural technicality. It is a constitutional requirement.

Nigerian courts have repeatedly emphasised that fair hearing requires a procedure that gives the parties a genuine opportunity to present their respective cases.

12. Privacy and Family Life Are Protected

Section 37 protects the privacy of citizens, their homes, correspondence, telephone conversations and telegraphic communications.

The provision is increasingly significant in the digital age.

Issues involving:

• telephone interception;
• private communications;
• electronic surveillance;
• access to personal information;
• searches of private premises; and
• digital privacy

may potentially raise constitutional questions in addition to issues under specific legislation.

13. Freedom of Thought, Conscience and Religion

Section 38 protects freedom of thought, conscience and religion.

Every person is entitled to freedom to change their religion or belief and to manifest or propagate their religion or belief, subject to the constitutional limitations.

The right is important because Nigeria is a religiously diverse country, and constitutional protection applies regardless of the individual’s religious belief.

14. Freedom of Expression and the Press

Section 39 guarantees freedom of expression, including the freedom to hold opinions and to receive and impart ideas and information without interference.

The provision also protects freedom of the press and other mass media.

Freedom of expression, however, is not necessarily absolute. Constitutional and statutory restrictions may apply in circumstances permitted by law.

Issues involving defamation, national security, public order, contempt, privacy and other legal restrictions may therefore require consideration alongside section 39.

15. Freedom of Assembly and Association

Section 40 guarantees the right to assemble freely and associate with other persons.

This includes the right to form or belong to political parties, trade unions or other associations for the protection of one’s interests, subject to constitutional and statutory restrictions.

The provision is central to democratic participation and civil society.

16. Freedom of Movement

Section 41 protects freedom of movement within Nigeria.

It also recognises the right of citizens to reside in any part of Nigeria.

The constitutional protection is relevant to issues involving:

• unlawful restrictions on movement;
• exclusion from a particular area;
• travel restrictions;
• immigration-related matters; and
• movement of citizens between States.

As with other fundamental rights, the right is subject to constitutional limitations.

17. Discrimination Is Constitutionally Prohibited

Section 42 protects citizens against discrimination on specified grounds.

The Constitution prohibits discriminatory treatment based on circumstances including community, ethnic group, place of origin, sex, religion or political opinion.

The provision is important in employment, education, public appointments and access to public institutions.

A claim of discrimination should, however, be analysed carefully against the exact language of section 42 and any applicable legislation.

18. Fundamental Rights Can Be Enforced in Court

Constitutional rights would have limited practical value if there were no mechanism for enforcing them.

Section 46 of the Constitution provides a constitutional enforcement mechanism for fundamental rights.

A person who alleges that a provision of Chapter IV has been, is being or is likely to be contravened may apply to a High Court for redress.

The section also provides for rules governing the practice and procedure for such applications.

In practice, fundamental-rights litigation must also be considered alongside the applicable Fundamental Rights (Enforcement Procedure) Rules.

19. Public Revenue and the Federation Account Are Constitutionally Regulated

The Constitution contains important provisions dealing with public finance.

Section 162 provides for the Federation Account and the distribution of revenue collected by the Federation.

The constitutional provisions concerning public revenue are particularly important in disputes involving:

• federal revenue;
• States;
• Local Governments;
• derivation;
• revenue allocation; and
• public financial administration.

Questions about the distribution or control of public revenue should therefore be approached from both constitutional and statutory perspectives.

20. The Constitution Provides the Framework for Altering Itself

The Constitution is supreme, but it is not legally immutable.

The Constitution establishes a procedure for its alteration.

Section 9 of the Constitution sets out the constitutional requirements for altering provisions of the Constitution.

The procedure generally requires substantial legislative support and, depending on the provision being altered, approval by a prescribed proportion of State Houses of Assembly.

This is why constitutional amendments require a substantially different process from the enactment of an ordinary Act of the National Assembly.

The Fifth Alteration Acts enacted in 2023 illustrate how the constitutional alteration process has been used to change specific constitutional provisions.

Why the Nigerian Constitution Matters in Everyday Life

Constitutional law is not limited to political disputes.

The Constitution can become relevant whenever the exercise of governmental power affects a person’s rights or when there is a dispute concerning the powers of a public institution.

For example, constitutional issues may arise in:

• arrest and detention;
• criminal prosecution;
• police investigations;
• freedom of expression;
• religious freedom;
• discrimination;
• election disputes;
• public appointments;
• legislative competence;
• executive powers;
• judicial jurisdiction;
• property and public finance;
• federalism; and
• fundamental-rights litigation.

Understanding the Constitution therefore gives citizens and legal practitioners a framework for understanding how public power may lawfully be exercised.

Constitutional Research: Start With the Exact Provision

A constitutional dispute should ordinarily be researched from the specific constitutional provision involved.

For example:

• detention → section 35;
• fair hearing → section 36;
• privacy → section 37;
• freedom of expression → section 39;
• association → section 40;
• movement → section 41;
• discrimination → section 42;
• fundamental-rights enforcement → section 46;
• judicial powers → section 6;
• legislative powers → section 4;
• executive powers → section 5; and
• constitutional amendment → section 9.

The Constitution of the Federal Republic of Nigeria 1999 on Nigerian LawCompass provides a useful starting point for researching the text of the Constitution and navigating its individual provisions.

Frequently Asked Questions About the Nigerian Constitution

What is the supreme law in Nigeria?

The Constitution of the Federal Republic of Nigeria is the supreme law of Nigeria. Section 1 establishes its supremacy and provides that inconsistent laws are void to the extent of the inconsistency.

What are fundamental rights in Nigeria?

Fundamental rights are the rights protected under Chapter IV of the Constitution. They include rights such as life, dignity, personal liberty, fair hearing, privacy, expression, association, movement and freedom from discrimination.

Can fundamental rights be enforced in court?

Yes. Section 46 provides for applications to a High Court for redress where a person’s fundamental rights under Chapter IV have been, are being or are likely to be contravened.

Does the Constitution give the courts unlimited jurisdiction?

No. The Constitution establishes and confers jurisdiction on various courts, but the jurisdiction of a particular court must be identified from the applicable constitutional and statutory provisions.

Can the Nigerian Constitution be amended?

Yes. The Constitution itself provides a procedure for alteration, principally under section 9.

Does every government action comply with the Constitution automatically?

No. Government authorities must exercise their powers within the limits of the Constitution and other applicable laws. Where an act is inconsistent with the Constitution, the validity of that act may be challenged.

Conclusion

The Constitution of the Federal Republic of Nigeria 1999 is the foundation of Nigeria’s legal and governmental system.

It determines the structure and powers of government, establishes the courts, protects fundamental rights and provides the framework for relations between the Federation and the States.

For lawyers, constitutional provisions should be read together with legislation, judicial decisions and applicable procedural rules. For citizens, understanding the Constitution provides an important starting point for knowing the limits of government power and the rights protected by law.

For detailed constitutional research, consult the Constitution of the Federal Republic of Nigeria 1999 and the relevant individual provisions on Nigerian LawCompass.

Nigerian LawCompass — Intelligent Research. Decisive Law.

Disclaimer: This article is provided strictly for information and educational purposes only. It is not intended to constitute, and should not be relied upon as, legal advice. Constitutional questions are often fact-specific and may depend on the current Constitution as amended, legislation, judicial decisions and applicable procedural rules. Readers should obtain appropriate professional legal advice for specific matters.