L礙 Du廕姊 (7 April 1907 ??10 July 1986) was a Vietnamese communist politician. He rose in the party hierarchy in the late 1950s and became General Secretary of the Central Committee of the Communist Party of Vietnam (VCP) at the 3rd National Congress in 1960. He continued H廙?Ch穩 Minh's policy of ruling through collective leadership. From the mid-1960s, when H廙?s health was failing, until his own death in 1986, he was the top decision-maker in Vietnam.

He was born into a lower-class family in Qu廕τg Tr廙?province, in the central part of French Indochina as L礙 V?n Nhu廕要. Little is known about his family and childhood. He first came in contact with Marxist literature in the 1920s through his work as a railway clerk. L礙 Du廕姊 was a founding member of the Indochina Communist Party (the future Communist Party of Vietnam) in 1930. He was imprisoned in 1931 and released in 1937. From 1937 to 1939 he climbed the party ladder. He was rearrested in 1939, this time for fomenting an uprising in the South. L礙 Du廕姊 was released from jail following the successful communist-led August Revolution.

During the First Indochina War, L礙 Du廕姊 was an active communist cadre in the South. He headed the Central Office of South Vietnam, a party organ, from 1951 until 1954. During the 1950s L礙 Du廕姊 became increasingly aggressive towards the South and called for reunification through war. By the mid-to-late 1950s L礙 Du廕姊 had become the second-most powerful policy-maker within the Party, eclipsing former party First Secretary Tr??廙??g Chinh. By 1960, he was officially the second-most powerful party member, after party chairman H廙? Throughout the 1960s H廙?s health declined and L礙 Du廕姊 assumed more of his responsibilities. On 2 September 1969, H廙?died and L礙 Du廕姊 became the most powerful figure in the North.

Throughout the Vietnam War, L礙 Du廕姊 took an aggressive posture. He saw attack as the key to victory. When the North f