| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Lactobacillus suantsaii | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Lactobacillus suantsaicola | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Lactobacillus spicheri | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Lactobacillus songhuajiangensis | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Lactobacillus songbeiensis | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Lactobacillus sobrius | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Lactobacillus similis | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Lactobacillus siliginis | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Lactobacillus silagincola | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Lactobacillus silagei | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Lactobacillus sicerae | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Lactobacillus shenzhenensis | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Lactobacillus sharpeae | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Lactobacillus senmaizukei | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Lactobacillus senioris | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Lactobacillus secaliphilus | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Lactobacillus satsumensis | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Lactobacillus saniviri | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Lactobacillus sanfrancisco | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Lactobacillus sanfranciscensis | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Lactobacillus salsicarnum | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Lactobacillus salivarius | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Lactobacillus salivarius subsp. salivarius | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Lactobacillus salivarius subsp. salicinius | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Lactobacillus salitolerans | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Lactobacillus sakei | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Lactobacillus sakei subsp. sakei | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Lactobacillus sakei subsp. carnosus | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Lactobacillus sake | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Lactobacillus sake subsp. sake | Unknown | Valid (ICNP) | Excubia bot over 3 years ago |