Methylocapsa acidiphila is a bacterium.

It is a methane-oxidizing and dinitrogen-fixing acidophilic bacterium first isolated from Sphagnum bog.

Its cells are aerobic, gram-negative, colourless, non-motile, curved coccoids that form conglomerates covered by an extracellular polysaccharide matrix.

The cells use methane and methanol as sole sources of carbon and energy.

B2T (= DSM 13967T = NCIMB 13765T) is the type strain.