BLM may stand for:
- Basic Learning Materials
- Bayerische Landeszentrale fur Neue Medien
- Beam Loss Measurement
- Bergbahn Lauterbrunnen-Mürren: a funicular in Switzerland
- Bilayer lipid membrane
- Biotic Ligand Model
- Black Line Master
- Border Liaison Mechanism
- Boundary-Layer Model
- Bundesvereinigung Liberealer Mittelstand
- Bureau of Land Management
- BLM is the Bloom syndrome gene.