- ACUTRONIC Medical Systems AG Acquired By Vyaire Medical
- Acutus Medical Acquisitions
- ACV Auctions Acquisitions
- ACV Enviro Acquisitions
- ACW Technology Acquired By TT Electronics
- ACWA Power International Acquisitions
- Acxiom - AISS Acquired By Sterling Infosystems
- Acxiom - Marketing Solutions Business Acquired By The Interpublic Group of Companies
- Acxiom Impact Acquired By Zeta Interactive
- ACXIT Capital Holding GmbH
- ACXIT Capital Holding Acquired By Stifel Financial
- ACXSS365 Acquired By Sterling Healthcare Logistics
- Acyclica Acquired By FLIR Systems
- Aczone Gel 5 Acquired By Allergan
- Ad Astra Recovery Services Acquired By CURO Group Holdings
- AD Corretora de Seguros Acquired By Marsh & McLennan Companies
- AD Education Acquired By Ardian
- AD Electronics Pvt. Acquired By Rexel SA
- AD Fire Protection Systems Acquired By Carboline
- AD Industries SAS Acquisitions
- Ad Infuse Acquired By Velti
- Ad Ketelaars
- AD MediCal AB Acquired By Indutrade AB
- Ad Notenboom
- Ad ON Stream Services Acquired By Muses Marketing Pvt.
- AD OPT Technologies Acquired By IBS Software Services Pvt.
- AD PathLabs Acquired By Pathology
- ad pepper media International NV Acquisitions
- Ad Performance AB Acquired By Quantcast
- AD Polska Sp. Zo.o. Acquired By Groupe Autodistribution SA
- Ad Populum Acquisitions
- Ad Practitioners Acquisitions
- Ad Remover Acquired By Corel
- AD Solutions Acquisitions
- Ad van Geloven BV Acquired By McCain Foods
- Ad-Juster Acquired By DoubleVerify Holdings
- Ad-Venture Interactive Acquisitions
- Ad-Ventures 4 Acquired By Sonobi
- AD.Dialeto Acquired By Accenture
- Ad.net Acquisitions
