- C.L. Engenharia Acquired By Sulzer
- C.L. Services Acquisitions
- C.L. Smith Acquired By Kelso & Company
- C.L. Thomas Acquisitions
- C.L.B. Electronics Holding B.V. Acquisitions
- C.L.N. Acquisitions
- C.M. Heating Acquired By Air Pros USA
- C.M. van Sillevoldt B.V. Acquired By McCormick
- C.N. Schmidt B.V. Acquired By Brenntag
- C.P. Converters Acquisitions
- C.P. Crane Power Plant Acquired By Avenue Capital Group
- C.P. Environmental Acquired By Micronics
- C.P. Loewen Enterprises Acquisitions
- C.P.G. Lab srl Acquired By Merieux NutriSciences
- C.Q. Insulation Acquired By Installed Building Products
- C.R. Gibson Acquisitions
- C.R. Laurence Acquired By Oldcastle BuildingEnvelope
- C.S.S. Trading Company Acquired By After Six
- C.T. Hellmuth and Associates Acquired By Digital Insurance
- C.T. Hsu + Associates Acquisitions
- C.T.LAY S.R.L. Acquired By Sun Chemical
- C.TRAC Acquired By Pierry Software
- C.V. Starr Acquisitions
- C.W. Brown Acquired By LeChase Construction Services
- C.W. Downer & Co.
- C.W. Henderson and Associates Acquired By Federated Hermes
- C.W. Nofsinger Acquired By Burns & McDonnell
- C.W. Ross
- C.W. Thomas Acquisitions
- C/A Design Acquired By The Heico Companies
- C/C Financial Acquired By Rent-A-Center
- C/F Insurance Acquired By Folksamerica Holding Company
- C/G Electrodes Acquired By GrafTech International
- C1 Consulting Acquired By CRA International
- C1000 De Aker BV Acquired By Jumbo Groep Holding BV
- C2 Capital Partners Mergers and Acquisitions
- C2 Design Automation Acquired By Cadence Design Systems
- C2 Group Acquired By FTI Consulting
- C2 Reprographics Acquisitions
- C2 Therapeutics Acquired By PENTAX Medical
