| sauce manufacturers | school | school bus |
| school of business | schools-academic-colleges | schools-academic-secondary |
| schools academic colleges universities | schools academic secondary elementary | schools universities colleges |
| school supplies | school uniforms | screen printing |
| screw machine products | seafood | seafood restaurants |
| seafood wholesale | secondary schools | secretarial reporting |
| secretarial schools | security brokers | security dealers |
| security exchanges | security services | sedation dentistry |
| self service laundry | semiconductor devices | service stations-gasoline |
| service stations-oil | sewage companies | sewer |
| sewing | sheet metal work | shoe repair |
| shoe stores | sign dealer | sign manufacturers |
| silverware ware | single-family housing construction | skid dealers |
| skids | skilled nursing care facilities | smelter |
| social associations | social services | software stores |
| souvenir shops | special academic education schools | special trade contractors |
| sporting goods | sports club | sports managers |
| sports promoters | sports service | spring coil |
| spring manufacturer | station | stationery stores |
| steak restaurants | steel fabricators | steel mill |
| steel pipe | stitching | stock bond brokers |
| stock brokers | stone products | storage commercial |
| street construction | structural steel erection | subdividers |
| sunday schools | sundries | supermarket |
| surety insurance | surgeons | surgery dentists |
| surgical appliances | surgical hospital | surgical instruments |
| surgical supply | surveying services | surveyors |
| surveyors-land | swimming pool contractors | swimming pool designer |
