Phạm Cự Lạng (范巨倆, 944–984) or Phạm Cự Lượng (范巨量), was a general of Đại Cồ Việt, who served as Grand Commandant during Đinh dynasty and Early Lê dynasty.

Lạng was born in Trà Hương, Khúc Giang (mordern Nam Sách District, Hải Dương Province). His father Phạm Lệnh Công was a general of Ngô Quyền. Lạng led 2000 men and swore allegiance to Đinh Bộ Lĩnh, and later became an important general of Đinh dynasty.

Lê Hoàn was made regent in 979, and Lạng became Hoàn's right hand. Song China took note of the weakened condition of Đại Cồ Việt and began to make plans for reconquering the country. Lạng was appointed commander-in-chief to defense. Before the troops set out, Lạng staged a coup, declared Lê Hoàn the new emperor.

范巨倆（；944年 - 984年），一作范巨量（），《宋史·交趾傳》作范巨備，越南丁朝、前黎朝時期的將領。

范巨倆是曲江茶鄉（今屬海陽省南策縣）人，祖父是吳朝將領范令公。丁部領崛起後，范巨倆率2000人投奔了丁部領，後來成為十道將軍黎桓的心腹。

979年，丁部領被弒，其幼子丁璿繼位。黎桓掌權，稱副王。980年，宋太宗以剷除專權的黎桓為名，派兵南侵。黎桓任命范巨倆為大將軍，剛要出兵之時，范巨倆便與各將軍著戎裝入十道將軍府中，煽動部下發動兵變，要擁立黎桓為皇帝。部下皆高呼萬歲，皇太后楊雲娥便以黃袍加於黎桓之身，讓黎桓登基，改元天福，將丁璿降封衛王。范巨倆隨即被黎桓冊封為太尉。翌年，黎桓擊退宋軍的入侵。

982年，隨黎桓征討占城。黎桓征討占城時，過銅鼓山、至婆和江，路途艱難，難以往來。黎桓派范巨倆至驩州，指揮建多蓋港。

984年，范巨倆逝世。

范巨倆被後世的越南人尊為獄神。在《粵甸幽靈集》裡，范巨倆被稱為「洪聖佐治大王」。