G. S. Sachdev (born Gurbachan Singh Sachdev, in Lyallpur, Punjab, 24 April 1935 – 24 June 2018) was an Indian performer of the bansuri (bamboo flute). He performed Hindustani classical music.
Sachdev was a student of the flautist Vijay Raghav Rao for 12 years, living with him for 3 years as a disciple.
Sachdev was on the advisory board of the World Flute Society.
Among his students were Oscar van Dillen and Jin Hi Kim.