| City of Franklin | US | Healthcare | 1 |
| City of Fullerton | US | — | 1 |
| City of Gloucester | US | — | 1 |
| City of Grandview, Missouri | US | — | 1 |
| City of Grass Valley | US | — | 1 |
| City of Greenfield | US | — | 1 |
| City of Hayward | US | — | 2 |
| City of Hercules, California | US | — | 1 |
| City of Hesperia | US | — | 1 |
| City of Hobart, Indiana | US | — | 1 |
| City of Holyoke Gas & Electric | US | — | 1 |
| City of Hope | US | — | 3 |
| City of Houston Health Department | US | — | 1 |
| City of Houston | US | — | 1 |
| City of Indio/Indio Water Authority | US | — | 1 |
| City of Iowa City | US | — | 1 |
| City of Jacksonville Beach, Florida | US | — | 1 |
| City of Keene | US | — | 1 |
| City of Keene, New Hampshire | US | — | 2 |
| City of La Vergne, Tennessee | US | — | 2 |
| City of Lacey | US | — | 1 |
| City of Lake Jackson | US | — | 1 |
| City of Leavenworth, KS | US | — | 1 |
| City of Lowell | US | — | 1 |
| City of Malden | US | — | 1 |
| City of Marina, California | US | — | 1 |
| City of Marion Iowa | US | — | 1 |
| City of Marlborough | US | — | 1 |
| City of Maywood | US | — | 2 |
| City of McKinney | US | — | 1 |
| City of McMinnville | US | — | 1 |
| City of Medford Public Schools | US | — | 1 |
| City of Memphis | US | — | 1 |
| City of Miami Beach | US | — | 1 |
| City of Miami Gardens | US | — | 1 |
| City of Middletown | US | Healthcare | 1 |
| City of Mission | US | — | 1 |
| City of Muscatine | US | — | 1 |
| City of Nashua School District | US | — | 1 |
| City of Nassau Bay, Texas | US | — | 1 |
| City of Newport, Rhode Island | US | — | 1 |
| City of North Adams | US | — | 1 |
| City of Oakland | US | — | 1 |
| City of Oceanside | US | — | 1 |
| City of Oxnard | US | — | 1 |
| City of Peabody, MA | US | — | 1 |
| City of Pensacola, Florida | US | — | 1 |
| City of Philadelphia | US | — | 2 |
| City of Pittsburg, California | US | — | 2 |
| City of Port Hueneme | US | — | 1 |
| City of Portland, Texas | US | — | 1 |
| City of Puyallup | US | — | 1 |
| City of Redmond | US | — | 1 |
| City of Roanoke | US | — | 1 |
| City of Roanoke, VA | US | — | 1 |
| City of Roseburg | US | — | 1 |
| City of Royal Oak, Michigan | US | — | 1 |
| City of San Clemente | US | — | 1 |
| City of Sebastopol | US | — | 1 |
| City of Sheboygan, Wisconsin | US | — | 1 |
| City of Sioux City - Click2Gov | US | — | 1 |
| City of St. Cloud, Florida | US | — | 1 |
| City of St. Helena | US | — | 1 |
| City of St. Joseph, MO Health Department | US | Healthcare | 1 |
| City of Suffolk, Virginia | US | — | 1 |
| City of Sun Prairie, Wisconsin | US | — | 1 |
| City of Thousand Oaks | US | — | 2 |
| City of Torrance | US | — | 2 |
| City of Torrance, California | US | — | 1 |
| City of Traverse City | US | — | 1 |
| City of Tucson, AZ | US | — | 1 |
| City of Vallejo | US | — | 1 |
| City of Victorville, California | US | — | 1 |
| City of Washington Court House | US | — | 1 |
| City of West Haven | US | — | 1 |
| City of Whitehall | US | — | 1 |
| City of Wilton Manors | US | — | 1 |
| City of Worcester, MA | US | — | 1 |
| City University of Seattle | US | — | 1 |
| Citybank, N.A. | US | — | 1 |
| Citywide Home Loans, LLC | US | — | 2 |
| Ciuni and Panichi, Inc. | US | — | 1 |
| Ciuni & Panichi, Inc. | US | — | 2 |
| Civil Air Patrol | US | — | 1 |
| CJ Products Inc. | US | — | 1 |
| CJGO Fulfillment, Inc. DBA | US | — | 1 |
| CJGO Fulfillment, Inc. DBA CoffeeAM | US | — | 1 |
| CK-12 Foundation | US | — | 2 |
| CK Progress Inc. | US | — | 1 |
| Clackamas Community College | US | — | 2 |
| Clackamas Education Service District | US | — | 1 |
| Claire's Stores, Inc. | US | — | 1 |
| Clallam County Public Utility District | US | — | 1 |
| ClamCase LLC | US | — | 1 |
| Claremedica Viking, LLC | US | Healthcare | 1 |
| Claremont Companies | US | — | 1 |
| Claremont Lincoln University | US | — | 1 |
| Claremont University Consortium | US | — | 1 |
| Clarinda Regional Health Center | US | Healthcare | 3 |
| Claris Vision | US | — | 1 |
| Claris Vision Holdings, LLC | US | — | 1 |
| Clarity Benefit Solutions | US | — | 1 |
| Clarity Group (“Clarity”) | US | — | 1 |
| Clarity Telecom, LLC d/b/a Bluepeak | US | — | 2 |
| Clarity Water Technologies, LLC | US | — | 1 |
| Clark County School District | US | — | 1 |
| Clark County, WA | US | — | 1 |
| Clark & Enersen | US | — | 1 |
| Clark Hill | US | — | 8 |
| Clark Material Handling Company | US | — | 1 |
| Clark University | US | — | 1 |
| Clarke County Hospital | US | — | 1 |
| Clarke Nicolini & Associates, Ltd | US | — | 1 |
| Clarkston Chiropractic Sports & Wellness | US | Healthcare | 1 |
| Clarksville Independent School District | US | — | 1 |
| Clarus Corporation | US | Manufacturing | 1 |
| CLAS Information Services | US | — | 1 |
| Class Advisors | US | — | 1 |
| Classic Residence Management | US | — | 1 |
| Classic Residence Management Limited Partnership d/b/a Vi Living ("Vi") | US | — | 1 |
| Classic Residence Management Limited Partnership d/b/a Vi Senior Living (“Vi”) | US | — | 1 |
| Classical Conversations, Inc. | US | — | 1 |
| Clawson Honda of Fresno | US | — | 1 |
| Claxton-Hepburn Medical Center | US | Healthcare | 1 |
| Clay County, MN | US | — | 1 |
| Clay Platte Family Medicine | US | Healthcare | 1 |
| Clayco Electric Co., Inc. | US | — | 1 |
| Clayton Dubilier & Rice, LLC | US | — | 1 |
| Clayton Properties Group | US | — | 1 |
| CLC Resort Management LLC | US | — | 1 |
| Clean Asset Partners Corporation | US | — | 1 |
| Clean Rentals | US | — | 1 |
| CleanMark Group Inc. | US | — | 1 |
| CleanSlate Centers, Inc. | US | — | 1 |
| Clear Mountain Bank | US | — | 1 |
| Clear Spring Life and Annuity Company | US | — | 1 |
| Clear Spring Life and Annuity Insurance Company | US | — | 1 |
| Clear Street Management LLC | US | — | 1 |
| CLEAResult Consulting Inc. | US | — | 1 |
| Clearstead Advisors LLC | US | — | 1 |
| ClearVision Optical | US | — | 1 |
| ClearVoice Research.com, LLC | US | — | 2 |
| Clearwater Credit Company | US | — | 1 |
| Clearwater Credit Union | US | — | 1 |
| Clearwater Credit Union ("Clearwater") | US | — | 1 |
| Clearway Clinic, Inc | US | — | 1 |
| Clearway Pain Solutions Institute | US | — | 1 |
| Cleary Insurance, Inc. | US | — | 1 |
| Cleburne Independent School District | US | — | 1 |
| Cleburne ISD | US | — | 1 |
| Clement Manor | US | Healthcare | 2 |
| Clements | US | — | 1 |
| Clements Worldwide Insurance | US | — | 1 |
| Cleo AI Inc | US | — | 1 |
| Cleo Communications US, LLC | US | — | 1 |
| Cleveland Brothers Holding, Inc. | US | — | 1 |
| Cleveland Clinic Foundation | US | — | 1 |
| Cleveland Integrity Systems, Inc. | US | — | 1 |
| Client 1st Financial | US | — | 1 |
| Clif Bar Family Winery & Farm, LLC | US | — | 1 |
| Cliff Viessman, Inc. | US | — | 1 |
| CliftonLarsonAllen LLC | US | — | 2 |
| Clinic of North Texas LLP | US | — | 1 |
| Clinic Service Corporation | US | Healthcare | 1 |
| Clinica Family Health Services | US | Healthcare | 1 |
| Clinical Pathology Laboratories, Inc. | US | — | 2 |
| Clinical Practices of the University of Pennsylvania | US | Healthcare | 1 |
| Clinical Registry Solutions | US | Healthcare | 3 |
| Clinivate, LLC | US | — | 2 |
| Cloud Imperium Games | US | — | 1 |
| Cloud Software Group, Inc | US | — | 1 |
| Cloudflare | US | — | 1 |
| Clover Health | US | Healthcare | 1 |
| Clover Park School District | US | — | 1 |
| Club Car, LLC | US | — | 2 |
| Club Fitness Holdings, Inc. | US | — | 1 |
| Club Quarters Hotels | US | — | 1 |
| Club Quarters Management | US | — | 1 |
| Club Vita US | US | — | 1 |
| ClubSport San Ramon and Oakwood Athletic Club | US | — | 1 |
| Clymene Management Services, LLC | US | — | 2 |
| CM Ebar LLC | US | — | 1 |
| CM Group Holdings, Inc | US | — | 1 |
| CMC Design Build Inc. | US | — | 1 |
| CMC Group, Inc. | US | — | 1 |
| CMC Tax Services | US | — | 1 |
| CMD Corporation | US | — | 1 |
| CMD Outsourcing Solutions | US | — | 1 |
| CMFG Life Insurance Co. | US | — | 2 |
| CMFG Life Insurance Company / Members Life Insurance Company | US | — | 1 |
| CMG CIT Acquisition, LLC dba | US | — | 1 |
| CMG Mortgage Inc. | US | — | 1 |
| CMI Marketing, Inc. d/b/a Cafe Media | US | — | 1 |
| CNA Financial Corporation | US | Insurance | 1 |
| CNB Bank | US | — | 1 |
| CNB Bank & Trust, N.A. | US | — | 1 |
| CNG Financial Corporation, Inc. and its administrative services entity Axcess Financial Services, Inc | US | — | 1 |
| CNHI, LLC | US | — | 2 |
| CNO Services, LLC | US | — | 2 |
| Co-op Credit Union | US | — | 1 |