---
title: "Myung Jaehyun (명재현) of BOYNEXTDOOR"
url: https://coolkpop.com/idols/boynextdoor-jaehyun
as_of: 2026-10-30
---

# Myung Jaehyun (명재현) of BOYNEXTDOOR

Former YG trainee, core group songwriter/composer, and viral M Countdown MC known for theatrical live intros.

| Field | Value |
| --- | --- |
| Group | [BOYNEXTDOOR](https://coolkpop.com/artists/boynextdoor) |
| Agency | KOZ Entertainment |
| Birth name | — |
| Born | 2003-12-04 |
| Nationality | South Korean |
| Positions | Leader, Rapper, Vocalist, Songwriter |
| Height | — |
| Activity status | active |