Politics and Business magazines
- Synnex Corporation
- Synopsis, Inc.
- Synopsys, Inc.
- SynOptics Communications, Inc.
- Syntex Corporation
- SyQuest Technology, Inc.
- Syratech Corp.
- System Software Associates, Inc.
- Systemax, Inc.
- Systems & Computer Technology Corp.
- Sytner Group plc
- T-Netix, Inc.
- T-Online International AG
- T. Marzetti Company
- TA Triumph-Adler AG
- TAB Products Co.
- TABCORP Holdings Limited
- Taco Bell
- Taco John's International, Inc
- Taco John’s International Inc.