A. arsenitoxydans A. cholinophagum A. clevelandea A. cycloclastes A. denitrificans A. insolitus A. lyticus A. marplatensis A. obae A. piechaudii A. ruhlandii A. spanius A. xylosoxidans Achromobacter is a genus of bacteria, included in the family Alcaligenaceae in the order Burkholderiales.

The cells are Gram-negative straight rods and are motile by using one to 20 peritrichous flagella.

They are strictly aerobic and are found in water (fresh and marine) and soils.

[1] They have also been identified as a contaminant in laboratory cell cultures.

[2] They have been identified as opportunistic human pathogens in people with certain immunosuppressive conditions such as cystic fibrosis, cancer and kidney failure.