The Miryang Park clan (Korean: 밀양 박씨; Hanja: 密陽朴氏) or Milseong Park clan (밀성 박씨; 密城朴氏) is a Korean clan from Miryang, now in South Gyeongsang Province, South Korea. The clan descends from the 10th century prince Pak Ŏnch'im (박언침; 朴彦忱), son of King Gyeongmyeong of Silla.

During Joseon dynasty, where its Caste System required families to produce members that passed the National Service Exam at least every fourth generation to maintain their Yangban Status, the Miryang Park Clan distinguished itself by producing numerous Gwageo exam selectees: 261 in the Literary Exam (문과) and 1,125 in the Military Exam (무과). Although Korean Yangbans did not formally have hereditary military and literary families, Miryang Park clan comes close to being a military clan, simply due to the majority of its Gwageo applicants passing the military exam and pursuing a military career throughout the Joseon dynasty.

In modern times, the chaebeol families of Doosan Group and POSCO founders are of the Miryang Park Clan.