| seethe | bouillonner |
| Seething cauldron | Mean Streets |
| Seewald | Seewald |
| Seewen | Seewen |
| Seewis im Prättigau | Seewis im Prättigau |
| Sefer Halilović | Sefer Halilović |
| Sefer Torah | Sefer Torah |
| Sefid River | Sefid Roud |
| Sefrou Prefecture | Province de Sefrou |
| Seftigen | Seftigen |
| Sega | Sega |
| Sega Game Gear | Game Gear |
| Sega Genesis Collection | Sega Megadrive Collection |
| Sega Master System | Master System |
| Sega Mega Drive | Megadrive |
| Sega Mega-CD | Mega-CD |
| Sega music | Séga |
| Sega NAOMI | Sega Naomi |
| Sega Nomad | Nomad |
| Sega Pico | Sega Pico |
| Sega Rally Championship | Sega Rally Championship |
| Sega Saturn | Saturn |
| Segata Sanshiro | Segata Sanshiro |
| Segesta | Ségeste |
| segetal | ségétal |
| Segisaurus | Segisaurus |
| segment | segment |
| segmentation | segmentation |
| Segmentation fault | Erreur de segmentation |
| Segmented optics | Optique segmentee |
| Segni | Segni |
| Segnosaurus | Segnosaurus |
| Segovia | Ségovie |
| Segre | Sègre |
| segregate | séparer |
| Segregated cycle facilities | Aménagement cyclable |
| segregation | séparation |
| Segrià | Segrià |
| segue | transition |
| Segundo Castillo | Segundo Castillo |
| Segundo River | Río Segundo |
| Segura | Segura |
| Segway PT | Segway PT |
| Sei Shōnagon | Sei Shōnagon |
| sei whale | rorqual boréal |
| Seibal | Seibal |
| Seibu Dome | Dôme Seibu |
| Seibu Lions | Seibu Lions |
| Seibu Railway | Réseau Seibu |
| Seid | Seydr |
| Seigenthaler controversy | Affaire Seigenthaler |
| Seigneux | Seigneux |
| Seignory | Seigneur |
| Seigo Narazaki | Seigo Narazaki |
| Seiichi Itō | Seiichi Itō |
| Seiichiro Maki | Seiichiro Maki |
| Seiji Ozawa | Seiji Ozawa |
| Seijin shiki | Seijin shiki |
| Seijuu Sentai Gingaman | Gingaman |
| Seikan Tunnel | Tunnel du Seikan |
| Seiken Densetsu | Seiken densetsu |
| Seiko Epson | Epson |
| Seimas | Seimas |
| Seimens | Siemens |
| seine | seine |
| Seine River | Seine |
| Seine-et-Marne | Seine-et-Marne |
| Seine-et-Oise | Seine-et-Oise |
| Seine-Maritime | Seine-Maritime |
| Seine-Saint-Denis | Seine-Saint-Denis |
| Seinen | Seinen |
| Seinfeld | Seinfeld |
| seism | séisme |
