Maeng Seong-ung (Korean: 맹성웅; born 4 February 1998) is a South Korean footballer currently playing as a midfielder for Jeonbuk Hyundai Motors.

He went to Paichai High School, before going to Yeungnam University.

[1] He stayed with them for 2 years, before joining Jeonbuk Hyundai Motors in 2022.

Maeng was part of the squad that won the AFC U-23 Championship in 2020 with the South Korea under 23 side.

This biographical article related to South Korea association football is a stub.