Gwangsan Tak clan (Korean: 광산 탁씨; Hanja: 光山 卓氏) is a Korean clan.
According to the research in 2015, the number of Gwangsan Tak clan was 19551.
Their founder was Tak Ji yeop [ja].
He had an ancestor who was appointed as Podeokhu (Hanja: 布德侯) in Han dynasty.
He began Gwangsan Tak clan because he was appointed as Prince of Gwangsan (Hanja: 光山君).