Park Young-seok, South Korean mountaineer and explorer (d. 2011)
Park Young-seok (Korean: 박영석; Hanja: 朴英碩: November 2, 1963 – October 2011 on Annapurna) was a South Korean mountaineer.

In May 2005, he became the first person in the world to complete a True Explorers Grand Slam. He climbed the world's 14 eight-thousanders, the Seven Summits, and trekked to both poles. He holds the world's fourth fastest time (behind Nirmal Purja of Nepal, Kim Chang-ho of South Korea, and Jerzy Kukuczka of Poland) for ascending the 14 eight-thousanders, he climbed six of the 8,000-meter Himalayan peaks within one year, and gained another record for reaching the South Pole on foot in 44 days, self-sufficient and without any food re-supplies.