Pengsoo (Korean: 펭수, Pengsu) is a penguin character that appears on the YouTube channel Giant Peng TV, run by Educational Broadcasting System (EBS) in South Korea.

On January 29, 2020, Giant Peng TV (자이언트 펭TV), Pengsoo's YouTube channel, reached 2 million subscribers.

Educational Broadcasting System (EBS) first conceptualized Pengsoo as a character "the whole family could like" and was originally designed to target a demographic of children in South Korea around 10 years old.

While EBS had significant success with children's programming, the company had generally targeted a younger age group with simple, "cute and cuddly" personas such as Pororo the Little Penguin.

[11] Pengsoo was selected as a presenter for the 34th Golden Disk Awards[12] and has made content with K-Pop group Twice.

[15] In 2019, Pengsoo's popularity was cited in increased searches by South Koreans of travel to Ushuaia, a point close to Antarctica allowing for wildlife viewing such as penguins.

[18] Pengsoo has received attention from the South Korean government, and was invited to the Ministry of Foreign Affairs and met Minister Kang Kyung-wha on November 6, 2019 to promote a special summit between South Korea and the ten-member Association of Southeast Asian Nations.