1. SUPREME COURT
Location: Abuja.
Composition: Chief Justice of Nigeria & 21 judges.
Jurisdiction: Highest (i.e. it is the apex court - no further appeal).

2. COURT OF APPEAL
Location: Different states.
Composition: President of the Court & other judges as preassigned by an Act of the National Assembly.
Jurisdiction: 2nd highest (appeals from all lower courts & all tribunals).

3. FEDERAL HIGH COURT
Location: Different states.
Composition: Chief Judge & 49 judges.
Jurisdiction: 3rd highest (civil cases & matters outlined in section 251-1 of the 1999 constitution).

4. STATE HIGH COURT
Location: Every state & FCT.
Composition: Chief Judge & other judges as preassigned by an Act of the State Assembly..
Jurisdiction: 3rd highest (appellate jurisdiction over area courts, magistrate courts, customary courts etc).

5. NATIONAL INDUSTRIAL COURT
Location: Some states.
Composition: President of the Court, with various judicial separations.
Jurisdiction: 3rd highest (like a state high court but dealing with industrial matters).

6. SHARIA COURT OF APPEAL
Location: Abuja & states that have implemented it.
Composition: Grand Kadi & a number of Kadis.
Jurisdiction: 3rd highest (deals with civil cases involving Islamic personal law).

7. CUSTOMARY COURT OF APPEAL
Location: FCT & states that have implemented it.
Composition: President of the Court & other judges.
Jurisdiction: 3rd highest (deals with civil cases involving customary law).

8. MAGISTRATE & DISTRICT COURTS
Location: All states & FCT.
Composition: Magistrate.
Jurisdiction: 4th highest.

9. CUSTOMARY/ AREA / SHARIA COURTS
Location: All states & FCT.
Composition: Judge.
Jurisdiction: Lowest.

So Islam has two courts in 9ja while Christians has non, ok.