Yangsan (Korean: 양산; Korean pronunciation: [jaŋ.san]) is a city in Gyeongsangnam-do Province, South Korea.

It borders Ulsan to the northeast, Gijang-gun and Geumjeong District in Busan to the southeast, Gimhae to the southwest, and Miryang to the northwest. City Hall is located in Nambu-dong, Yangsan.

Currently, Yangsan is made up of 1 Eup (administrative division), 4 Myeon (administrative division) and 8 Dong.

Yangsan means that it will open up as a future city with a bright, hopeful 21st century like magnolia, the flower of the city, and symbolizes Yangsan's strong will to build a first-class mass-production as the center of economy, society and culture in the eastern inland.

Yangsan has a humid subtropical climate (Köppen: Cwa) with very warm summers and cold winters.

Yangsan has two stations on the Gyeongbu Line: Mulgeum station (물금역) and Wondong station (원동역). The nearest KTX stations are Ulsan station in Ulsan and Gupo station in Busan.

Busan Subway Line 2 serves the city, with five stations currently operating: Yangsan Station, Namyangsan Station, Busan National University Yangsan Campus station, Jeungsan station and Hopo station. An additional station that will connect with the Yangsan Metro is currently under construction.

Yangsan Metro is under construction and is scheduled to open in 2024.