:Gyeryong

{{Short description|City in South Chungcheong, South Korea}}

{{Infobox settlement

| name = Gyeryong City

| native_name = {{lang|ko|계룡시}}

| translit_lang1 = Korean

| settlement_type = Municipal City

| translit_lang1_type1 = Hangul

| translit_lang1_info1 = {{lang|ko|계룡시}}

| translit_lang1_type2 = Hanja

| translit_lang1_info2 = {{lang|ko|{{linktext|鷄|龍|市}}}}

| translit_lang1_type3 = {{nowrap|Revised Romanization}}

| translit_lang1_info3 = Gyeryong-si

| translit_lang1_type4 = {{nowrap|McCune–Reischauer}}

| translit_lang1_info4 = Kyeryong-si

| image_skyline = Gyeryong City Hall.JPG

| imagesize =

| image_caption = Gyeryong City Hall

| image_map = South Chungcheong-Gyeryong.svg

| mapsize =

| map_caption = Location in South Korea

| subdivision_type = Country

| subdivision_name = {{flag|South Korea}}

| subdivision_type1 = Region

| subdivision_name1 = Hoseo

| population_blank1_title = Dialect

| population_blank1 = Chungcheong

| area_total_km2 = 60.7

| population_as_of = September 2024

| population_total = 46,687

| population_density_km2 = 704

| parts_type = Administrative divisions

| parts = 3 myeon, 1 dong

| image_blank_emblem = Gyeryong logo.png

| blank_emblem_type = Logo

| image_flag = Flag of Gyeryong.svg

}}

Gyeryong City ({{Korean|hangul=계룡시||rr=Gyeryong-si}}; {{IPA|ko|kje̞.ɾjo̞ŋ}}) is a city in southeastern South Chungcheong Province, South Korea. The incumbent mayor is {{ill|Lee Eung-woo|ko|이응우}}.{{Cite web |title=인사말 |url=https://www.gyeryong.go.kr/chief/html/sub01/0101.html |url-status=live |archive-url=https://web.archive.org/web/20250323175004/https://www.gyeryong.go.kr/chief/html/sub01/0101.html |archive-date=March 23, 2025 |access-date=March 23, 2025 |publisher=Gyeryong City |language=ko}} The city was created in 2003 after being split from Nonsan.

Gyeryongdae, a large military complex that serves as the headquarters of the Republic of Korea Armed Forces, is located on Gyeryong's outskirts. Due to the city's proximity to Gyeryongdae, approximately half of its inhabitants are connected to the military as service personnel and their dependents or civilian employees. The city also hosts major South Korean and international military conferences. From 1989 to 1993, the military headquarters were relocated from several locations in Seoul to a more spacious and newly-built integrated complex. The Army and Air Force headquarters were first moved to Gyeryongdae in 1989, followed by the Navy headquarters four years later.{{Cite web|url=http://terms.naver.com/entry.nhn?docId=3571796&cid=58929&categoryId=58929|title=Gyeryong si, Naver cast, sintaengniji|website=Naver cast}}

The nearby Mount Gyeryong is considered to have the most qi (spiritual energy) of any mountain in the country and is the heart of Gyeryongsan National Park. As of September 2024, the city's population was 46,687.{{cite web |url=https://jumin.mois.go.kr/|title=Population statistics |date=2024|website=Korea Ministry of the Interior and Safety}}