- S2 Interactive Acquisitions
- S2 Security Acquired By ACI Worldwide
- S2C Global Systems Acquired By United Athletes
- S2C Tech Acquired By SMIT Holdings
- S2G Biochemicals Acquired By Fortress Global Enterprises
- S2S Inverters Acquired By Legrand SA
- S3 Aero Specialists Acquired By Jet Support Services
- S3 ASIC Semiconductors Acquired By Adesto Technologies
- S3 Graphics Acquired By HTC
- S3 TV Technology Acquired By Accenture
- S:t Eriks AB Acquisitions
- SA Designer Parfums Acquisitions
- SA Escaffre & Fils and Eurl Espace Carrelages Acquired By Ferguson
- SA Feather Acquired By Varsity Brands
- SA Lotteries Pty Acquired By Tatts Group
- SA Recycling Acquisitions
- SA Towers Acquired By HTN Towers
- SA Vulcain Ingénierie Acquired By Equistone Partners Europe Limited
- SAA Global Education Centre Pte Acquired By Malvern International
- Saab AB Acquisitions
- Saab Automobile AB Acquisitions
- Saab Medav Technologies Acquisitions
- Saab Medav Technologies - Noise Vibration & Harshness Business Acquired By Siemens AG
- Saab Microwave Systems AB Acquired By Saab AB
- Saab Nyge Aero AB Acquisitions
- Saad Bendidi
- Saad Zaman
- Saagar Kulkarni
- Saari Partners Oy
- Saarstahl AG Acquisitions
- Saas Instrumentti Oy Acquired By Profita Management Oy
- SaaS Transportation Acquired By WiseTech Global
- SaaScend Acquisitions
- SaaSfocus Acquired By Cognizant Technology Solutions
- SaaShr.com Acquired By Kronos
- SaaSID Acquired By Intermedia.net
- SaaSplaza B.V. Acquired By RIB Software SE
- Saaspoint Acquired By Appirio
- Saatchi & Saatchi Wellness Acquisitions
- SAB Wabco Group AB Acquired By Faiveley Transport SA
