Calculibacillus

{{Short description|Genus of bacteria}}

{{Italic title}}

{{Taxobox

| name =

| image =

| image_caption =

| domain = Bacteria

| regnum = Bacillati

| phylum = Bacillota

| classis = Bacilli

| ordo = Bacillales

| familia = Bacillaceae

| genus = Calculibacillus

| genus_authority = Min et al. 2021{{cite web |author=A.C. Parte |url=https://lpsn.dsmz.de/genus/calculibacillus |title=Calculibacillus |access-date=2025-02-28 |publisher=List of Prokaryotic names with Standing in Nomenclature (LPSN) |display-authors=et al.}}

| type_species = Calculibacillus koreensis

| type_species_authority =Min et al. 2021

| subdivision_ranks = Species{{cite web |author=C.L. Schoch |url=https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Tree&id=2683678&lvl=3&lin=f&keep=1&srchmode=1&unlock |title=Calculibacillus |access-date=2025-02-28 |publisher=National Center for Biotechnology Information (NCBI) taxonomy database |display-authors=et al.}}

| subdivision =

• C. koreensis

}}

Calculibacillus is a Gram-positive, non-spore-forming and strictly anaerobic genus of bacteria from the family of Bacillaceae with one known species (Calculibacillus koreensis).{{cite journal |title=Calculibacillus |website=www.uniprot.org |url=https://www.uniprot.org/taxonomy/2683678}}{{cite journal |last1=Min |first1=Ui-Gi |last2=Kim |first2=So-Jeong |last3=Hong |first3=Heeji |last4=Kim |first4=Song-Gun |last5=Gwak |first5=Joo-Han |last6=Jung |first6=Man-Young |last7=Kim |first7=Jong-Geol |last8=Na |first8=Jeong-Geol |last9=Rhee |first9=Sung-Keun |title=Calculibacillus koreensis gen. nov., sp. nov., an anaerobic Fe(III)-reducing bacterium isolated from sediment of mine tailings |journal=Journal of Microbiology |date=1 June 2016 |volume=54 |issue=6 |pages=413–419 |doi=10.1007/s12275-016-6086-8|pmid=27225457 |s2cid=17696102 }} Calculibacillus koreensis has been isolated from sediments of a coal mine in Taebaek.