| J.O. LEBRON MINISTRIES INC.Callahan, FL · Inactive | Callahan, FL | Nonprofit | Dec 29, 2015 | Inactive |
| BUCK ISLAND HUNTING CLUB INCCallahan, FL · Inactive | Callahan, FL | Nonprofit | Feb 24, 2016 | Inactive |
| GREEN MEADOWS AT JAX HOA, INC.Callahan, FL · Inactive | Callahan, FL | Nonprofit | Jun 8, 2016 | Inactive |
| RAMBLERS ATHLETIC BOOSTER CLUB, INC.Callahan, FL · Inactive | Callahan, FL | Nonprofit | Oct 6, 2016 | Inactive |
| FUN AND GAMES INC.Callahan, FL · Inactive | Callahan, FL | Nonprofit | Oct 13, 2016 | Inactive |
| NEVER DUN FARM INCORPORATEDCallahan, FL · Inactive | Callahan, FL | Nonprofit | Nov 8, 2016 | Inactive |
| GOD'S BRIDGE JOL MINISTRIES, INC.Callahan, FL · Inactive | Callahan, FL | Nonprofit | Dec 8, 2016 | Inactive |
| EMPOWERMENT RANCH INC.Callahan, FL · Inactive | Callahan, FL | Nonprofit | Apr 6, 2017 | Inactive |
| VAN DELINDER MINISTRIES INCCallahan, FL · Inactive | Callahan, FL | Nonprofit | May 2, 2017 | Inactive |
| NASSAU COMMUNITY DEVELOPMENT CORPORATIONCallahan, FL · Inactive | Callahan, FL | Nonprofit | Mar 8, 2018 | Inactive |
| TRANSPLANT LIFE, INC.Callahan, FL · Inactive | Callahan, FL | Nonprofit | Mar 26, 2018 | Inactive |
| SOUTHEAST STAFFORDSHIRE BULL TERRIER CLUB, INC.Callahan, FL · Inactive | Callahan, FL | Nonprofit | Mar 28, 2018 | Inactive |
| TAKE A BREATH FOR CYSTIC FIBRISOS INC.Callahan, FL · Inactive | Callahan, FL | Nonprofit | Jun 12, 2018 | Inactive |
| DOGGIE STYLE DOGS, INC.Callahan, FL · Inactive | Callahan, FL | Nonprofit | Aug 2, 2018 | Inactive |
| KNIGHTS OF COLUMBUS COUNCIL #12896, INC.Callahan, FL · Inactive | Callahan, FL | Nonprofit | Aug 6, 2018 | Inactive |
| GOD'S BRIDGE LAMB OF GOD MINISTRIES, INC.Callahan, FL · Inactive | Callahan, FL | Nonprofit | Aug 14, 2018 | Inactive |
| NOAH'S ARC II THRIFT OUTLET, INC.Callahan, FL · Inactive | Callahan, FL | Nonprofit | Sep 27, 2018 | Inactive |
| JACKSONVILLE BLUEWATER CLUB OF FL, INC.Callahan, FL · Inactive | Callahan, FL | Nonprofit | Feb 18, 2019 | Inactive |
| WEST NASSAU CHEERLEADING BOOSTER CLUB CORPCallahan, FL · Inactive | Callahan, FL | Nonprofit | Apr 9, 2019 | Inactive |
| GLOBAL UNIVERSAL OUTREACH MINISTRIES INCCallahan, FL · Inactive | Callahan, FL | Nonprofit | Jul 25, 2019 | Inactive |
| VETERANS AND FIRST RESPONDERS FOR ORPHANS, INC.Callahan, FL · Inactive | Callahan, FL | Nonprofit | Oct 23, 2020 | Inactive |
| OAKRIDGE FARMS CALLAHAN HOMEOWNERS ASSOCIATION, INC.Callahan, FL · Inactive | Callahan, FL | Nonprofit | Oct 29, 2020 | Inactive |
| ATD NEFL, INC.Callahan, FL · Active | Callahan, FL | Nonprofit | Jun 2, 1987 | Active |
| LIFE EMPOWERMENT MINISTRIES, INC OF CALLAHAN, FLORIDACallahan, FL · Inactive | Callahan, FL | Nonprofit | May 3, 2021 | Inactive |
| WEST NASSAU SPORTS ASSOCIATION INC.Callahan, FL · Inactive | Callahan, FL | Nonprofit | Jun 4, 2021 | Inactive |
| #PROMISEASHLYNN INC.Callahan, FL · Inactive | Callahan, FL | Nonprofit | Jun 24, 2021 | Inactive |
| FIRST COAST NETWORK CHURCH OF THE NAZARENE, INC.Callahan, FL · Inactive | Callahan, FL | Nonprofit | Aug 30, 2021 | Inactive |
| CALLAHAN YOUNG GUNS BASEBALL CORPCallahan, FL · Inactive | Callahan, FL | Nonprofit | Dec 21, 2021 | Inactive |
| JUST FOR THE LOVE OF JESUS MINISTRIES, INC.Callahan, FL · Inactive | Callahan, FL | Nonprofit | Jun 8, 1987 | Inactive |
| WEST NASSAU HISTORICAL SOCIETY, INC.Callahan, FL · Active | Callahan, FL | Nonprofit | Jun 8, 1987 | Active |
| DOLLAR MARKET INCCallahan, FL · Inactive | Callahan, FL | Nonprofit | Mar 4, 2022 | Inactive |
| CYCLONES SOFTBALL INC.Callahan, FL · Inactive | Callahan, FL | Nonprofit | Jul 18, 2022 | Inactive |
| NASSAU COUNTY COMMUNITY CARES INCCallahan, FL · Inactive | Callahan, FL | Nonprofit | Aug 11, 2023 | Inactive |
| MINISTERIO AYUDANDO NACIONES INC.Callahan, FL · Inactive | Callahan, FL | Nonprofit | Sep 13, 2023 | Inactive |
| JACKSONVILLE BLUEWATER FISHING ASSOCIATION, INC.Callahan, FL · Inactive | Callahan, FL | Nonprofit | Nov 13, 2023 | Inactive |
| CALLAHAN CHARGERS FOOTBALL ASSOCIATION, INC.Callahan, FL · Inactive | Callahan, FL | Nonprofit | Jan 22, 2024 | Inactive |
| WIDOWS SONS, BOAZ CHAPTER INCCallahan, FL · Active | Callahan, FL | Nonprofit | Feb 16, 2024 | Active |
| HAPPY CAMPER CHIC INCCallahan, FL · Inactive | Callahan, FL | Nonprofit | May 21, 2024 | Inactive |
| GRACIES MISSION INCCallahan, FL · Active | Callahan, FL | Nonprofit | Nov 7, 2025 | Active |
| CALLAHAN CHRISTIAN HOMESCHOOLERS INCCallahan, FL · Active | Callahan, FL | Nonprofit | Nov 10, 2025 | Active |
| NF TRIBE SOFTBALL INCCallahan, FL · Active | Callahan, FL | Nonprofit | Nov 12, 2025 | Active |
| LIVE OAK BAPTIST CHURCH, INC.Callahan, FL · Active | Callahan, FL | Nonprofit | Mar 18, 1988 | Active |
| ROBINS QUEST INCCallahan, FL · Active | Callahan, FL | Nonprofit | Mar 3, 2026 | Active |
| THE WILLIAM L. HADDEN FOUNDATION, INC.Callahan, FL · Active | Callahan, FL | Nonprofit | Feb 27, 2026 | Active |
| TRENCH WARFARE CORPCallahan, FL · Active | Callahan, FL | Nonprofit | Mar 5, 2026 | Active |
| 1800LIVINGTHEDREAM.COM, INCCallahan, FL · Active | Callahan, FL | Nonprofit | Mar 26, 2026 | Active |
| MEMBERS CHURCH OF GOD INTERNATIONAL IN CALLAHAN INCCallahan, FL · Active | Callahan, FL | Nonprofit | Mar 25, 2026 | Active |
| WARPATH WRESTLING CLUB INC.Callahan, FL · Active | Callahan, FL | Nonprofit | May 20, 2026 | Active |
| CLEAN GIER FOUNDATION CORPCallahan, FL · Active | Callahan, FL | Nonprofit | Jul 22, 2026 | Active |
| LAUREL OAK ESTATES HOA, INCCallahan, FL · Active | Callahan, FL | Nonprofit | Sep 9, 2026 | Active |