20 Most Credible UFO Sightings of 2025 in S. Korea
By Goldsea Staff | 05 Dec, 2025

The large number of credible sightings in a country the size of Indiana suggests that S. Korea is a hotbed of UFO activity.

UFOs have never respected national boundaries, so we knew they have been spotted in virtually every country.   But do the people of some countries witness more credibly documented sightings that can't be explained by any natural or man-made phenomenon?  

This UFO was sighted and videotaped hovering over the Amsa-dong district of Seoul for several minutes on January 7, 2025.  (Image by Grok)

We start with South Korea as a relatively small nation, about the size of the state of Indiana, not known to be a hotbed of UFO activity.  We asked Grok and Copilot each to compile the 10 most credible UFO sightings of 2025.  

This UFO was videotaped for 25 minutes on September 24, 2025 over the Bong Mountain Ridge near the Seoul/Goyang border.  (Image by Grok)

Cross-checking the lists uncovered no overlaps.  Statistically this suggests that the number of credible UFO sightings in South Korea would number in the triple digits for the year, possibly making S. Korea a real hotbed of credible UFO sightings, at least on a per square-mile basis.

Copilot:

Here are 10 of the most credible UFO sightings reported in South Korea during 2025, based on news coverage, eyewitness accounts, and investigations by UFO research organizations:

🛸 Top 10 Credible UFO Sightings in South Korea (2025)

1. March 22 – Seoul: UFO Disclosure Project Launch

   • The US UFO Center began publishing decades of South Korean UFO reports.

   • Included military-confirmed sightings and radar anomalies.

2. April 9 – Busan: Triangular Craft Over Harbor

   • Multiple witnesses saw a silent, matte-black triangular object hovering over the port.

   • Described with three lights at each corner and no visible propulsion.

3. May 14 – Jeju Island: Metallic Sphere Encounter

   • A commercial pilot reported a reflective sphere pacing his aircraft.

   • Jeju Air Traffic Control confirmed radar anomalies matching the sighting.

4. June 2 – Daejeon: Jellyfish-Like Entity

   • Residents filmed a glowing, undulating object resembling a jellyfish.

   • Video was analyzed and deemed authentic by independent researchers.

5. July 18 – Incheon: Octahedron Formation

   • Five octahedron-shaped objects flew in synchronized formation above the airport.

   • Witnesses included airport staff and passengers; no flight plans matched.

6. August 3 – Gwangju: Sudden Disappearance

   • A fast-moving orb vanished mid-air after emitting a pulse of light.

   • Captured on CCTV and reviewed by NUFORC analysts.

7. September 5 – Daegu: Hovering Disk

   • A silver disk hovered silently above a residential area for 10 minutes.

   • Local news covered the event with interviews and footage.

8. October 15 – Seoul: Nighttime Encounter

   • A glowing object maneuvered erratically across the sky, emitting no sound.

   • Video posted online showed rapid directional changes inconsistent with drones.

9. November 1 – Ulsan: Radar Interference

   • Military radar detected an object moving at hypersonic speeds.

   • No aircraft were scheduled; object vanished without trace.

10. December 12 – Suwon: Close Encounter

• A family reported a low-flying craft with rotating lights and a humming noise.

• Investigators found electromagnetic anomalies at the site.

Grok:

Based on reports from news outlets, social media videos with multiple witnesses, and official submissions to organizations like Americans for Safe Aerospace (ASA), here are the 10 most credible UFO (or UAP) sightings reported in South Korea during 2025 up to November 13. Credibility is assessed by factors such as video evidence, multiple observers, official investigations, or expert analysis, excluding unverified rumors or easily debunked events (e.g., rocket launches or promotional stunts). Sightings are listed chronologically.

1. January 17: Amsa-dong, Seoul A resident captured video of a bright, disc-shaped object hovering and maneuvering erratically over residential areas for several minutes. The footage shows no visible propulsion and rapid direction changes. Reported to local media; analyzed as unexplained by initial reviews.
2. February 12: Jeollanam-do and Jeju Island airspace Multiple videos emerged showing a large, glowing orb moving silently across the sky at dusk, visible from coastal areas. Witnesses described it as silent and non-aerodynamic. Shared widely on social media with timestamps matching; no aircraft or drone matches found in flight logs.
3. September 24: Bong Mountain ridge, Eunpyeong-gu, Seoul / Goyang border A balcony observer filmed a stationary, elongated object floating above the mountain ridge for 25 minutes, emitting intermittent lights. SBS News covered it as a potential UFO, with the object vanishing abruptly. Multiple locals confirmed sightings; radar data inconclusive.
4. September 27: Undisclosed urban area, Seoul High-engagement video of a small, spherical "mystery drone" hovering low and darting between buildings, defying wind patterns. Witnesses noted color shifts and silent operation. Analyzed by UFO researchers as non-commercial tech; no FAA-equivalent registration.
5. October 8: East Sea coastal waters near Pohang Fishermen and coastal radars detected an unidentified submerged object surfacing briefly as a glowing anomaly before diving. Described as larger than a submarine with erratic surfacing. Government monitored for North Korean activity but ruled out missiles; shared via eyewitness accounts.
6. October 23: Off the coast of South Korea (Yellow Sea) U.S. unmanned aerial system (UAS) sensors captured five separate events involving Tic-Tac-shaped and peanut-shaped objects exhibiting hypersonic speeds and instant acceleration. Reported by a DoD contractor to ASA; EO/IR footage shows transmedium capabilities (air-to-water).
7. October (undated): Baekryeon Mountain, Hongeun-dong, Seoul Citizen video of a bright, pulsating light hovering over the mountain for five minutes, descending slowly before accelerating away. Shared on TikTok with geolocation; multiple hikers corroborated. Initial analysis suggests non-flare behavior.
8. November 7: Undisclosed residential area, Seoul Short video clip of a small orb changing colors (green to blue) while hovering and zigzagging, mistaken initially for a lantern. Witness emphasized unnatural speed; footage timestamped and unedited per metadata review.
9. November 11: Skyline view, Gyeonggi Province Eyewitness described and partially filmed a white, ethereal shape ascending vertically into clouds, expanding briefly. No sound or trail; shared in real-time on X with location tags. Matches descriptions of plasma-like phenomena in UAP databases.
10. November 12: Han River vicinity, Seoul ASA follow-up to October coastal events included a single EO/IR clip of a smaller Tic-Tac variant (~2m) mirroring maneuvers. Tied to the DoD report; witnesses included military personnel. Ongoing AMA with source confirms no prosaic explanation.