• Borrelia afzelii Canica et al., 1994
• Borrelia anserina (Sakharoff, 1891) Bergey et al., 1925
• Borrelia baltazardi Karimi et al., 1979 accepted as Borrelia baltazardii corrig. (ex Karimi et al., 1979) Karimi et al., 1983
• Borrelia baltazardii corrig. (ex Karimi et al., 1979) Karimi et al., 1983
• Borrelia brasiliensis Davis, 1952
• Borrelia burgdorferi Johnson et al., 1984
• Borrelia caucasica (Kandelaki 1945) Davis, 1957
• Borrelia coriaceae Johnson et al., 1987
• Borrelia crocidurae (Leger 1917) Davis, 1957
• Borrelia dugesii (Mazzotti 1949) Davis, 1957
• Borrelia duttonii (Novy & Knapp 1906) Bergey et al., 1925
• Borrelia garinii Baranton et al., 1992
• Borrelia graingeri (Heisch 1953) Davis, 1957
• Borrelia harveyi (Garnham 1947) Davis, 1948
• Borrelia hermsii (Davis 1942) Steinhaus, 1946
• Borrelia hispanica (de Buen 1926) Steinhaus, 1946
• Borrelia japonica Kawabata et al., 1994
• Borrelia latyschewii (Sofiev 1941) Davis, 1948
• Borrelia lusitaniae Le Fleche et al., 1997
• Borrelia mazzottii Davis, 1956
• Borrelia miyamotoi Fukunaga et al., 1995
• Borrelia neotropicalis (Bates & St. John, 1922) Steinhaus, 1946 accepted as Borrelia venezuelensis (Brumpt 1921) Brumpt, 1922
• Borrelia parkeri (Davis 1942) Steinhaus, 1946
• Borrelia persica (Dschunkowsky 1913) Steinhaus, 1946
• Borrelia recurrentis (Lebert, 1874) Bergey et al., 1925
• Borrelia sinica Masuzawa et al., 2001
• Borrelia tanukii Fukunaga et al., 1997
• Borrelia theileri (Laveran 1903) Bergey et al., 1925
• Borrelia tillae Zumpt & Organ, 1961
• Borrelia turdi corrig. Fukunaga et al., 1997
• Borrelia turicatae (Brumpt 1933) Steinhaus, 1946
• Borrelia valaisiana Wang et al., 1997
• Borrelia venezuelensis (Brumpt 1921) Brumpt, 1922
• Cristispira pectinis Gross, 1910