The Brevundimonas are a genus of bacteria. They are Gram-negative, non-fermenting, aerobic bacilli. The Brevundimonas species are ubiquitous in the environment but are rarely isolated from clinical samples.,^[2] although numbers are increasing.^[3] Two species of Brevundimonas originally classified under the genus Pseudomonas have been re-classified by Seger et al. as Brevundimonas vesicularis and Brevundimonas diminuta.^[4]

The name Brevundimonas derives from:   Latin adjective brevis, short; Latin feminine gender noun unda, a wave; Latin feminine gender noun monas (μονάς), nominally meaning "a unit", but in effect meaning a bacterium; Neo-Latin feminine gender noun Brevundimonas, bacteria with short wavelength flagella.^[1]

Members of the genus Brevundimonas can be referred to as brevundimonad (viz. Trivialisation of names).

Brevundimonas is one of few bacteria showing high survival rates under simulated Martian conditions.^[5] Results from one of these experimental irradiation experiments, combined with previous radiation modeling, indicate that Brevundimonas sp. MV.7 em-placed only 30 cm deep in Martian dust could survive the cosmic radiation for up to 100,000 years before suffering 10⁶ population reduction.^{[clarification needed]}