List of clinically important bacteria

This is a list of bacteria that are significant in medicine. For viruses, see list of viruses.

A

 * Acetobacter aurantius
 * Acinetobacter baumannii
 * Actinomyces israelii
 * Agrobacterium radiobacter
 * Agrobacterium tumefaciens
 * Anaplasma
 * Anaplasma phagocytophilum
 * Azorhizobium caulinodans
 * Azotobacter vinelandii
 * viridans streptococci

B

 * Bacillus
 * Bacillus anthracis
 * Bacillus brevis
 * Bacillus cereus
 * Bacillus fusiformis
 * Bacillus licheniformis
 * Bacillus megaterium
 * Bacillus mycoides
 * Bacillus stearothermophilus
 * Bacillus subtilis
 * Bacillus thuringiensis
 * Bacteroides
 * Bacteroides fragilis
 * Bacteroides gingivalis
 * Bacteroides melaninogenicus (now known as Prevotella melaninogenica)
 * Bartonella
 * Bartonella henselae
 * Bartonella quintana
 * Bordetella
 * Bordetella bronchiseptica
 * Bordetella pertussis
 * Borrelia burgdorferi
 * Brucella
 * Brucella abortus
 * Brucella melitensis
 * Brucella suis
 * Burkholderia
 * Burkholderia mallei
 * Burkholderia pseudomallei
 * Burkholderia cepacia

C

 * Calymmatobacterium granulomatis
 * Campylobacter
 * Campylobacter coli
 * Campylobacter fetus
 * Campylobacter jejuni
 * Campylobacter pylori
 * Capnocytophaga canimorsus
 * Chlamydia
 * Chlamydia trachomatis
 * Chlamydophila
 * Chlamydophila pneumoniae (previously called Chlamydia pneumoniae)
 * Chlamydophila psittaci (previously called Chlamydia psittaci)
 * Citrobacter
 * Citrobacter freundii
 * Citrobacter koseri
 * Clostridium
 * Clostridium botulinum
 * Clostridium difficile
 * Clostridium perfringens (previously called Clostridium welchii)
 * Clostridium tetani
 * Corynebacterium
 * Corynebacterium diphtheriae
 * Corynebacterium fusiforme
 * Coxiella burnetii
 * Cutibacterium acnes (previously called Propionibacterium acnes)

E

 * Ehrlichia chaffeensis
 * Ehrlichia ewingii
 * Eikenella corrodens
 * Enterobacter cloacae
 * Enterococcus
 * Enterococcus avium
 * Enterococcus durans
 * Enterococcus faecalis
 * Enterococcus faecium
 * Enterococcus gallinarum
 * Enterococcus maloratus
 * Escherichia coli

F

 * Francisella tularensis (previously called Pasteurella tularensis)
 * Fusobacterium necrophorum
 * Fusobacterium nucleatum

G

 * Gardnerella vaginalis

H

 * Haemophilus
 * Haemophilus ducreyi
 * Haemophilus influenzae
 * Haemophilus parainfluenzae
 * Haemophilus pertussis
 * Haemophilus vaginalis
 * Helicobacter pylori

K

 * Kingella kingae
 * Klebsiella
 * Klebsiella granulomatis
 * Klebsiella pneumoniae

L

 * Lactobacillus
 * Lactobacillus acidophilus
 * Lactobacillus bulgaricus
 * Lactobacillus casei
 * Lactococcus lactis
 * Legionella pneumophila
 * Leptospira interrogans
 * Leptospira noguchii
 * Listeria monocytogenes

M

 * Methanobacterium extroquens
 * Microbacterium multiforme
 * Micrococcus luteus
 * Moraxella catarrhalis
 * Mycobacterium
 * Mycobacterium avium
 * Mycobacterium bovis
 * Mycobacterium diphtheriae
 * Mycobacterium intracellulare
 * Mycobacterium leprae
 * Mycobacterium lepraemurium
 * Mycobacterium phlei
 * Mycobacterium smegmatis
 * Mycobacterium tuberculosis
 * Mycoplasma
 * Mycoplasma fermentans
 * Mycoplasma genitalium
 * Mycoplasma hominis
 * Mycoplasma penetrans
 * Mycoplasma pneumoniae
 * Mycoplasma mexican

N

 * Neisseria
 * Neisseria gonorrhoeae
 * Neisseria meningitidis
 * Nocardia
 * Nocardia asteroides
 * Nocardia brasiliensis
 * Nocardia cyriacigeorgica
 * Nocardia farcinica

P

 * Pasteurella multocida
 * Peptostreptococcus
 * Porphyromonas gingivalis
 * Prevotella melaninogenica (previously called Bacteroides melaninogenicus)
 * Proteus
 * Proteus mirabilis
 * Proteus penneri
 * Proteus vulgaris
 * Pseudomonas aeruginosa

R

 * Rhizobium radiobacter
 * Rickettsia
 * Rickettsia prowazekii
 * Rickettsia psittaci
 * Rickettsia quintana
 * Rickettsia rickettsii
 * Rickettsia trachomae
 * Rochalimaea
 * Rochalimaea henselae
 * Rochalimaea quintana
 * Rothia dentocariosa

S

 * Salmonella
 * Salmonella enteritidis
 * Salmonella typhi
 * Salmonella typhimurium
 * Serratia marcescens
 * Shigella dysenteriae
 * Spirillum volutans
 * Staphylococcus
 * Staphylococcus aureus
 * Staphylococcus epidermidis
 * Stenotrophomonas maltophilia
 * Streptococcus
 * Streptococcus agalactiae
 * Streptococcus avium
 * Streptococcus bovis
 * Streptococcus cricetus
 * Streptococcus faceium
 * Streptococcus faecalis
 * Streptococcus ferus
 * Streptococcus gallinarum
 * Streptococcus lactis
 * Streptococcus mitior
 * Streptococcus mitis
 * Streptococcus mutans
 * Streptococcus oralis
 * Streptococcus pneumoniae
 * Streptococcus pyogenes
 * Streptococcus rattus
 * Streptococcus salivarius
 * Streptococcus sanguis
 * Streptococcus sobrinus

U

 * Ureaplasma urealyticum

V

 * Vibrio
 * Vibrio cholerae
 * Vibrio comma
 * Vibrio parahaemolyticus
 * Vibrio vulnificus

W

 * Wolbachia

Y

 * Yersinia
 * Yersinia enterocolitica
 * Yersinia pestis
 * Yersinia pseudotuberculosis