| Abiotrophia defectiva | Type Strain | ATCC® 49176™ | December 12, 2022 | 2.0 Mb | | |
| Acetivibrio thermocellus | Type Strain | ATCC® 27405™ | August 27, 2019 | 3.8 Mb | | |
| Acetobacter aceti | Type Strain | ATCC® 15973™ | September 29, 2020 | 3.7 Mb | | |
| Acetobacter aceti | | ATCC® 23746™ | January 28, 2021 | 3.7 Mb | | |
| Acetobacter pasteurianus subsp. pasteurianus | | ATCC® 12879™ | September 29, 2020 | 3.2 Mb | | |
| Acholeplasma granularum | Type Strain | ATCC® 19168™ | November 30, 2021 | 1.5 Mb | | |
| Acholeplasma laidlawii | Type Strain | ATCC® 23206™ | December 23, 2021 | 1.5 Mb | | |
| Acholeplasma oculi | Type Strain | ATCC® 27350™ | December 15, 2021 | 1.6 Mb | | |
| Achromobacter denitrificans | Type Strain | ATCC® 15173™ | February 25, 2023 | 6.7 Mb | | |
| Achromobacter xylosoxidans | | ATCC® 27063™ | December 12, 2022 | 6.5 Mb | | |
| Acidiphilium cryptum | Type Strain | ATCC® 33463™ | February 25, 2023 | 4.4 Mb | | |
| Acidothermus cellulolyticus | Type Strain | ATCC® 43068™ | February 26, 2020 | 2.4 Mb | | |
| Acidovorax avenae | Type Strain | ATCC® 19860™ | November 30, 2021 | 5.5 Mb | | |
| Acidovorax sp. | | ATCC® BAA-1802™ | August 3, 2020 | 4.6 Mb | | |
| Acinetobacter baumannii | GPS | ATCC® BAA-2801™ | February 26, 2020 | 4.4 Mb | | |
| Acinetobacter baumannii | Type Strain | ATCC® 19606™ | May 14, 2019 | 4.0 Mb | | |
| Acinetobacter baumannii | | ATCC® BAA-2871™ | May 1, 2020 | 3.9 Mb | | |
| Acinetobacter baumannii | | ATCC® BAA-1796™ | July 30, 2021 | 4.1 Mb | | |
| Acinetobacter baumannii | | ATCC® BAA-2895™ | August 3, 2020 | 4.5 Mb | | |
| Acinetobacter baumannii | GPS | ATCC® BAA-2893™ | May 1, 2020 | 4.2 Mb | | |
| Acinetobacter baumannii | | ATCC® 49466™ | April 28, 2023 | 4.1 Mb | | |
| Acinetobacter baumannii | | ATCC® BAA-1792™ | July 30, 2021 | 4.0 Mb | | |
| Acinetobacter baumannii | | ATCC® BAA-1797™ | April 28, 2023 | 4.1 Mb | | |
| Acinetobacter baumannii | GPS | ATCC® BAA-2881™ | March 27, 2020 | 4.0 Mb | | |
| Acinetobacter baumannii | GPS | ATCC® BAA-2877™ | March 27, 2020 | 4.0 Mb | | |
| Acinetobacter baumannii | | ATCC® BAA-2898™ | March 27, 2020 | 4.2 Mb | | |
| Acinetobacter baumannii | GPS | ATCC® BAA-2888™ | March 27, 2020 | 4.2 Mb | | |
| Acinetobacter baumannii | | ATCC® BAA-1798™ | July 30, 2021 | 4.0 Mb | | |
| Acinetobacter baumannii | GPS | ATCC® BAA-2900™ | March 27, 2020 | 4.0 Mb | | |
| Acinetobacter baumannii | Type Strain | ATCC® 17961™ | November 30, 2021 | 4.0 Mb | | |