Gastrolobium lehmannii, the Cranbrook pea, is a vulnerable shrub in the family Fabaceae which is endemic to an area of Western Australia.

It is an erect domed shrub, growing to 1.5 metres (5 ft) high with soft hairy branches and oblong leaves.

[2] The pea blooms between September and October[3] producing orange, yellow and red flowers.

Gastrolobium lehmannii was listed as "rare" under Western Australia's Wildlife Conservation Act 1950.

It was first collected by James Drummond (botanist) in 1841, and later by Charles Gardner in 1919 between Cranbrook and the Stirling Ranges and from the Blackwood River area.