Sikong Shu or Ssü-k'ung Shu (Chinese: 司空曙) (ca.720 - ca.790) was a Chinese poet of the Tang Dynasty.

Three of his poems were included in the popular anthology Three Hundred Tang Poems. Sikong was known as one of the "Ten Poets of Talent of the Dali period" (766–779), which was Emperor Daizong of Tang's third and final regnal period.