- Serials Solutions
- Series AT58 LED designed by Pininfarina
- Serif
- Serif Europe
- Serious Magic Inc.
- Serpro (Serviço Federal de Processamento de Dados)
- Servage AB
- Servatech Limited
- Server Technology
- ServerCentral, Inc.
- ServerHub
- Serverware Group
- Service Bureau Corporation
- Service Express, Inc.
- ServiceMax
- ServiceNow
- Services
- ServiceSource
- ServiCorps Systems, Inc.
- Servigistics
- Servlinx
- ServNet Technologies, LLC
- Servoy
- Sesame Software
- Sescoi
- Sescoi WorkNC
- Sescoi WorkNC Dental
- Sescoi WorkNC-CAD
- Sescoi WorkXPlore 3D
- Seshachal Technologies Ltd
- Seth Godin
- Sev1Tech, Inc.
- Seventeam
- Severo M. Ornstein
- SevOne Inc
- Seymour Cray
- Seymour Ivan Rubinstein
- Seymour Papert
- Seymour Roger Cray
- Seymoure Cray
- Seznam.cz
- Sf net
- SGA Co Ltd
- SGI 1600SW
- SGI Challenge S
- SGI Fuel
- SGI Indigo²
- SGI Indy
- SGI InfiniteStorage 10000
- SGI InfiniteStorage 220
- SGI InfiniteStorage 350
- SGI InfiniteStorage 4000
- SGI InfiniteStorage 4500
- SGI InfiniteStorage 4600
- SGI InfiniteStorage Server 3500
- SGI IRIS 1000
- SGI IRIS 2000
- SGI IRIS 3000
- SGI IRIS 4D
- SGI IRIS Crimson
- SGI IRIS Indigo
- SGI O2
- SGI Octane
- SGI Octane2
- SGI Onyx
- SGI Onyx2
- SGI Origin 200
- SGI Origin 2000
- SGI Origin 300
- SGI Origin 350
- SGI POWER Challenge
- SGI Tezro
- Sgt. Drew Benson
- SH910
- SH960
- Shade 3D
- Shape ApS
- Shareaza
- ShareDesk
- Shari Trewin
- Sharon Nunes
- Sharp SM-B-80TC
- Sharp X68000 XVI Compact
- Sharp AX 286
- Sharp Corporation
- Sharp CS-1120
- Sharp CS-1151 Compet
- Sharp CS-2114 COMPET CS-2114
- Sharp CT-200
- Sharp CT-450
- Sharp CT-510
- Sharp CT-550
- Sharp CT-555
- Sharp CT-610
- Sharp EL-102M
- Sharp EL-102R ELSI MATE
- Sharp EL-104 ELSI MATE
- Sharp EL-105 ELSI MATE
- Sharp EL-1101 ELSIMATE