Cupressus austrotibetica is a species of cypress tree native to the deep valleys of the Yarlung Tsangpo Grand Canyon area in the south of Tibet.

It is a large to extremely large tree, growing up to 102 metres tall, making it the second tallest tree species on Earth after Sequoia sempervirens.

[1][2] The bark is thick, grey-brown, vertically furrowed.

It is distinguished from other Cupressus species by its extremely slender, thread-like shoots under 1 mm thick, and small cones just 12-16 mm long and under 12 mm diameter, with 8–12 scales.

[2] Cupressus austrotibetica is native to the Yarlung Tsangpo Grand Canyon system, particularly its tributary the Parlung Tsangpo, at 1980-2800 m altitude.