---
title: "John A. Manglona | KnowJudges"
canonical: "https://knowjudges.com/kyj/judge/john-a-manglona-mp"
page_type: "judge_profile"
updated: "2026-10-07"
---

# John A. Manglona

Supreme Court of the Northern Mariana Islands · Associate Justice

## Profile

- Court: Supreme Court of the Northern Mariana Islands
- State: Northern Mariana Islands
- Role: Associate Justice
- Service status: active

## Summary

John A. Manglona — Supreme Court of the Northern Mariana Islands

## Sources

- [www.nmijudiciary.gov](https://www.nmijudiciary.gov/justices)

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## Biography

### Professional career

- Associate Justice of the Supreme Court of the Commonwealth of the Northern Mariana Islands, serving since 2000 and currently through his 2032 term
- He has presided over significant cases, such as In re Commonwealth (Manahane) in May 2026, alongside Chief Justice Alexandro C. Castro and Justice Pro Tempore Teresa K. Kim-Tenorio
- Position: Associate Justice, CNMI Supreme Court
- Justice Manglona has been on the CNMI Supreme Court for over 26 years

### Education


### Additional information

- While the provided sources do not detail his pre-judicial career, his long tenure and retention victories reflect a strong record in the CNMI judicial system
- Justice Manglona is a member of the Supreme Court of the Northern Mariana Islands, the highest court in the CNMI.



## Published courtroom rules

### Shared court rules

- [Northern Mariana Islands Supreme Court — oral argument](https://knowjudges.com/courtroom-rules/national-shared-set-520074a642e41badcd6a7ec6) — Supreme Court only; appellate rules effective March 15, 2024. Retains court discretion over argument time; later amendments and orders control. Shared baseline only, not a judge-specific preference or complete local rules inventory. Apply source exceptions, case-type limits, later amendments and case orders. [Official source](https://cnmilaw.gov/docs/courtrules/R01.pdf). Collected 2026-10-27.