Cheonseongsan

{{Short description|Mountain in South Korea}}

{{Infobox mountain

| name = Cheonseongsan

| photo = Cheonsung.JPG

| photo_caption =

| elevation_m = 812

| elevation_ref =

| prominence_m =

| prominence_ref =

| listing = Mountains of Korea

| range =

| country = South Korea

| subdivision1_type = Province

| subdivision1 = Gyeongsang

| map = South Korea

| coordinates = {{coord|35|25|13|N|129|06|44|E|region:KR_type:mountain_source:kolossus-kowiki|display=it}}

| coordinates_ref=

| type =

| first_ascent =

| easiest_route =

}}

Cheonseongsan (천성산 / 千聖山) is a mountain of Gyeongsang Province, southeastern South Korea. It has an elevation of 812 metres.{{cite book| last=An Gyeong-ho | year=2007| title=한국 300 명산 (300 Korean Mountains) |location=Seoul|publisher=깊은솔 (Gipeunsol)|isbn=978-89-89917-21-2}}