Bacterial evolution may refer to the biological evolution of bacteria as studied in:
- Bacterial taxonomy
- Bacterial phylodynamics
- Bacterial phyla
- Branching order of bacterial phyla (Woese, 1987)
- Branching order of bacterial phyla (Gupta, 2001)
- Branching order of bacterial phyla (Cavalier-Smith, 2002)
- Branching order of bacterial phyla (Rappe and Giovanoni, 2003)
- Branching order of bacterial phyla (Ciccarelli et al., 2006)
- Branching order of bacterial phyla (Battistuzzi et al., 2004)
- 'The All-Species Living Tree' Project
- Branching order of bacterial phyla (Genome Taxonomy Database, 2018)