DBM or dbm may refer to:

Science and technology

• dBm, a unit for power measurement

• DBM (computing), family of key-value database engines including , , , and Berkeley DB

• Database Manager (DBM), a component of 1987's Extended Edition v1.0 release of IBM's OS/2 operating system

• Dibenzoylmethane, an aromatic diketone: 1,3-diphenylpropane-1,3-dione

• Dibromomescaline, a psychedelic drug

• Dibromomethane, a halomethane

• Difference bound matrix, a data structure used in a field of computer science

• Dibutyl maleate, an organic chemical compound

Other uses

• Debre Marqos Airport, IATA airport code is DBM

• D. B. M. Patnaik (1925–2009), Indian lawyer, politician and communist leader

• De Bellis Multitudinis, a wargame ruleset

• Department of Budget and Management, the executive department in the Philippines

• Development Bank of Mongolia, bank of Mongolia

• D-flat minor, a theoretical musical key

• Dynamic Business Modeling, the ability to automate business models within an open framework