Zhōu Dédà 周德大 (hào Liǎngfēng 兩峯, “Two Peaks”) was a Southern-Sòng to Yuán Shàngqīng Daoist active in the late thirteenth or early fourteenth century. He is identified in the Daoist canon as the sìchuán 嗣傳 (transmission-heir) of KR5b0274 (Shàngqīng dàdòng jiǔgōng cháoxiū mìjué shàngdào), the compact Shàngqīng manual on the nine palaces of the head. No CBDB record located; Schipper & Verellen (Taoist Canon 3: 1185) treat him as a late-Sòng to Yuán Shàngqīng exegete, possibly active in the Mt. Máoshān 茅山 tradition.