 | SCHAU MASKIN AS | 927973820 | NES |
| SCHINDLER AS | 919876522 | VENNESLA |
| SCHJELDERUP ARKITEKTUR AS | 830070842 | STAVANGER |
| SCHJELDERUP TRONDAHL ARKITEKTER AS | 993847100 | LILLESAND |
| SCHJØLBERG & TOMBRE AS | 936816703 | HAMAR |
| SCHJØLL AS | 993909572 | VESTRE TOTEN |
| SCHNEIDER ELECTRIC NORGE AS | 916247389 | OSLO |
| SCHULT BETONG AS | 976111923 | MIDTRE GAULDAL |
| SCHWANITZ DEVELOPMENT AS | 997831454 | BÆRUM |
| SD BYGG OG VENTILASJON AS | 898073742 | INDRE ØSTFOLD |
| SDH BYGG MB | 931692496 | |
| SDK CONSULT AS | 916592477 | RÆLINGEN |
| SDN OPPMÅLING AS | 989384996 | LILLESTRØM |
| SD NORDICS AS | 930081698 | OSLO |
| SDV KLIMA AS | 887658072 | NORDRE FOLLO |
| SEABROKERS FUNDAMENTERING AS | 989580493 | STAVANGER |
| SE-ARKITEKTUR AS | 986536345 | BERGEN |
| SEAS SPJELKAVIK ELEKTRO AS | 980383946 | ÅLESUND |
| SEBB AS | 964419620 | SKJÅK |
| SEBY AS | 948829703 | LILLESTRØM |
| SEERUP AS | 950913061 | KLEPP |
| SEG ENTREPRENØR AS | 897012812 | FLÅ |
| SEGLEM PETTER EGIL | 970394575 | EIGERSUND |
| SEIERBYGG AS | 924379618 | EIDSVOLL |
| SEIERSTAD PELEMASKINER AS | 987580739 | BÆRUM |
| SEIL ARKITEKTER AS | 992713313 | KRISTIANSAND |
| SEIM BYGG AS | 984330324 | ALVER |
| SEIM MASKIN AS | 994321102 | SANDEFJORD |
| SEKO ELEKTRO AS | 963825250 | LILLESTRØM |
| S.EKTVEDT AS | 934409299 | TØNSBERG |
| SELBAK BLIKKENSLAGERVERKSTED AS | 957492614 | FREDRIKSTAD |
| SELBAK RØR AS | 920173691 | FREDRIKSTAD |
| SELBERG ARKITEKTER AS | 924003073 | TRONDHEIM |
| SELBOE BYGG AS | 980378039 | SELBU |
| SELBU BOLIGSYSTEM AS | 976593626 | SELBU |
| SELBUHUS RØRLEGGERSERVICE AS | 993332720 | SELBU |
| SELDAL MASKIN AS | 999322255 | SANDNES |
| SELEBØ RØRSERVICE AS | 996629325 | SOKNDAL |
| SELFORS INSTALLASJON AS | 884698022 | SØR-VARANGER |
| SELØY UNDERVANNSSERVICE AS | 943488185 | HERØY (N.) |
| SELTOR AS | 915617344 | PORSGRUNN |
| SELVAAG PROSJEKT AS | 994533207 | OSLO |
| SELVEN BYGG AS | 918353453 | TRONDHEIM |
| SELVIK BYGGESERVICE AS | 994968173 | BERGEN |
| SEMB RØRSERVICE | 985711240 | LARVIK |
| SEMCON NORD AS | 978654037 | BODØ |
| SENJABYGG AS | 940051398 | SENJA |
| SENNESETH BETONG & ANLEGG AS | 915614574 | RINGERIKE |
| SENNIT AS | 929242785 | HARSTAD |
| SENTRONIK AS | 992905409 | KINN |