Bam is commonly used as an onomatopoeia for a sound, mostly that of an impact or collision.
Bam or BAM may also refer to:
- Buildings
- Battle Mountain Airport (IATA airport code: BAM) in Battle Mountain, Nevada, United States
- Berkeley Art Museum and Pacific Film Archive in Berkeley, California, United States
- Brooklyn Academy of Music, a cultural center in Brooklyn, New York
- Companies and organizations
- BAM! Entertainment, a dormant software company
- Bell Atlantic Mobile, now Verizon Wireless
- Books-A-Million, an American book retailer
- Bromma Air Maintenance
- Bundesanstalt für Materialforschung und -prüfung, Federal Institute for Materials Research and Testing, Berlin, Germany
- Koninklijke BAM Groep (Royal BAM Group) is a Dutch construction firm.
- Computing
- Bidirectional Associative Memory, a type of neural network
- Binary Angular Measurement or Binary Angular Measurement System (BAMS)
- Block allocation map
- Burst Activity Management, a CAI Networks product feature
- Business activity monitoring, real-time monitoring of business processes
- BOINC Account Manager (BAM!), part of the Berkeley Open Infrastructure for Network Computing
- Entertainment and media
- BAM! Volume 1, an album by Sister Hazel
- BAM (magazine), a defunct San Francisco music magazine
- Bianca Montgomery and Maggie Stone (BaM), characters on the soap opera All My Children
- Bonnier Amigo Music Group
- Geography
- Bam County, an administrative subdivision of Iran
- Bam, Iran, a city
- 2003 Bam earthquake
- Bam, Esfarayen, a village in Esfarayen County, North Khorasan Province, Iran
- Bam, Jajrom, a village in Jajrom County, North Khorasan Province, Iran
- Bam Rural District, an administrative subdivision of Iran
- Bam (neighborhood), Tirana, Albania
- Bam Province, Burkina Faso
- ISO codes
- Bambara language ISO 639 code
- Bosnia and Herzegovina convertible mark, the ISO 4217 currency code for the currency of Bosnia and Herzegovina
- People
- Bam Bam Bigelow, former American professional wrestler
- Bam Childress, a professional American football player
- Bam Margera, professional skateboarder and television personality
- Peter Poulton, a UK radio presenter who is also known as Bam Bam
- Rail transport
- Baikal Amur Mainline, a Siberian railway line
- Bamford railway station, coded BAM
- Bière–Apples–Morges Railway, a railway company in Switzerland
- Other
- Baluchi Autonomist Movement a Baluchi ethnic nationalist group.
- BAM (material) a ceramic alloy, Aluminium magnesium boride
- BAM Racing, a NASCAR racing team
- Bar Mitzvah or Bat Mitzvah
- Board-a-match, a form of scoring at duplicate bridge
- Buque de Acción Marítima, offshore patrol vessels of the Spanish Navy
- Populus balsamifera, the balsam poplar