| SHERIDAN TOWING & SALVAGE LLC | 3654135 | SHERIDAN | 4 |
| SHERRIE L NEWTON | 1058898 | WORLAND | 6 |
| SHERVIN'S INDEPENDENT OIL CO INC | 695906 | JACKSON | 2 |
| SHERWOOD ENTERPRISES INC | 737820 | BIG PINEY | 14 |
| SHIELD HARDBANDING LLC | 2136787 | CASPER | 1 |
| SHIELDWATCH GROUP LLC | 4125767 | CHEYENNE | 1 |
| SHINN TRUCKING LLC | 4563917 | GILLETTE | 1 |
| SHIPALOCITY LLC | 2256468 | LARAMIE | 0 |
| SHIPLE TRUCKING LLC | 4368057 | GILLETTE | 2 |
| SHIPLEY TRUCKING LLC | 3241632 | GILLETTE | 3 |
| SHIPP LIVESTOCK LLC | 1233441 | TORRINGTON | 3 |
| SHIPPIN INC | 2254299 | RIVERTON | 1 |
| SHIPPING CONTAINERS 4 YOU LLC | 8246664 | CARPENTER | 2 |
| SHIPPING EXPRESS | 2947723 | CHEYENNE | 1 |
| SHIPVISTA CORPORATION | 3852466 | SHERIDAN | 0 |
| SHIRKS ENTERPRISES | 721919 | CASPER | 1 |
| SHOBER INVESTMENTS | 722227 | GILLETTE | 1 |
| SHOBER LIVESTOCK INC | 974958 | GILLETTE | 2 |
| SHOOLIN LOGISTICS LLC | 4179219 | SHERIDAN | 0 |
| SHORT BROTHERS DRILLING INC | 723910 | WORLAND | 1 |
| SHORT POWERLINE SERVICE LLC | 1057995 | GLENROCK | 27 |
| SHORT TRIP AUTO CARRIERS & MORE LLC | 4488173 | EVANSVILLE | 1 |
| SHOSHONE AND ARAPAHO TRIBES | 1145766 | FORT WASHAKIE | 1 |
| SHOSHONE LODGE & GUEST RANCH INC | 3882545 | CODY | 8 |
| SHOSHONE OPERATIONS FLP | 2260549 | POWELL | 8 |
| SHOWTIME INDUSTRIES INC | 3119734 | CASPER | 3 |
| SHUTTS TOWING & RECOVERY INC | 1129662 | CHEYENNE | 5 |
| SID'S WELDING & DIVERSIFIED SERVICES INC | 812686 | CASPER | 9 |
| SIDWELL HAY & CATTLE LLC | 649047 | CARPENTER | 2 |
| SIE OPERATING LLC | 4124887 | DIXON | 3 |
| SIERRA GATEWAY LLC | 4226265 | CHEYENNE | 0 |
| SIGMA TRANSPORT LLC | 4457482 | SHERIDAN | 1 |
| SIGN BOSS LLC | 2586886 | GILLETTE | 2 |
| SIGN IT CONSTRUCTION LLC | 789763 | CASPER | 1 |
| SIGNS 65 LLC | 4547837 | CHEYENNE | 1 |
| SILVER NAIL CONSTRUCTION LLC | 3324585 | GILLETTE | 1 |
| SILVER SPUR OPERATING COMPANY LLC | 844359 | ENCAMPMENT | 13 |
| SILVER STAR COMMUNICATIONS | 647252 | FREEDOM | 14 |
| SILVERLINE CONSTRUCTION LLC | 1846977 | GILLETTE | 9 |
| SILVERTIP ELECTRIC INC | 1483826 | CASPER | 2 |
| SILVERTIP FREIGHT INC | 2221211 | POWELL | 0 |
| SILZELL TRANSPORT LLC | 2150637 | DOUGLAS | 6 |
| SIMCO CONSTRUCTION LLC | 3600258 | SHERIDAN | 1 |
| SIMON CONTRACTORS | 104367 | CHEYENNE | 106 |
| SIMONS BUILT, LLC | 7030394 | GILLETTE | 0 |
| SIMPLE FREIGHT INC | 4459599 | CHEYENNE | 1 |
| SINCLAIR WYOMING REFINING COMPANY | 1861297 | SINCLAIR | 5 |
| SINGLE WATER SERVICES LLC | 1589244 | GLENROCK | 11 |
| SINKS CANYON INC | 740697 | LANDER | 7 |
| SITEWORX LLC | 4555577 | SHERIDAN | 4 |
| SIX CARGO LLC | 6611087 | GREEN RIVER | 1 |
| SIX D ENTERPRISE | 736548 | WORLAND | 3 |
| SIX SPUR LOGISTICS LLC | 4516353 | BIG PINEY | 1 |
| SJ EQUIPMENT LLC | 3178053 | DAYTON | 3 |
| SJB TRUCKING LLC | 3149222 | ROCK SPRINGS | 1 |
| SK RUNNING AND HOTSHOT LLC | 4146008 | MOORCROFT | 1 |
| SKALSKY'S POOR BOY FEED LLC | 3589032 | POWELL | 1 |
| SKEETER FRY TRUCKING LLC | 3531156 | ROCK RIVER | 1 |
| SKORCZ ELECTRIC INC | 1008461 | LANDER | 2 |
| SKORCZ ENTERPRISES INC | 1801701 | ROCK SPRINGS | 1 |
| SKULL CREEK SERVICES LLC | 4575720 | NEWCASTLE | 3 |
| SKV CRANE AND RIGGING LLC | 1772269 | WRIGHT | 3 |
| SKV LIMITED LIABILITY COMPANY | 489785 | WRIGHT | 8 |
| SKY BLUE ENTERPRISES INC | 711796 | WAMSUTTER | 12 |
| SKYHAWK INC | 2857834 | CODY | 2 |
| SKYLANE FREIGHT LLC | 3854676 | CHEYENNE | 0 |
| SKYLINE BUILDER INC | 2039131 | MOORCROFT | 3 |
| SKYLINE INC | 1573438 | GLENDO | 3 |
| SKYVALE LOGISTICS LLC | 6624377 | SHERIDAN | 0 |
| SKYWARD TREND LLC | 2785860 | CHEYENNE | 0 |
| SL DUBBYA TRUCKING LLC | 3495424 | CHEYENNE | 1 |
| SLATTERY ENTERPRISES INC | 510196 | GILLETTE | 17 |
| SLING SHOT LOGISTICS LLC | 3725944 | WHEATLAND | 0 |
| SLINGSHOT LLC | 1694931 | GILLETTE | 2 |
| SLIPSTREAM ENVIRONMENTAL SERVICES LLC | 3629773 | SHERIDAN | 19 |
| SLLM LLC | 4268319 | WRIGHT | 0 |
| SLONIKER TRUCKING LLC | 2541971 | GLENROCK | 1 |
| SLS WEST INC | 828185 | GILLETTE | 27 |
| SLUYTER CONCRETE | 3861271 | PINEDALE | 2 |
| SLUYTER CONSTRUCTION | 436138 | DANIEL | 1 |
| SM & SONS LLC | 7912310 | BUFFALO | 1 |
| SMALL WORLD LOGISTICS LLC | 2627499 | CHEYENNE | 0 |
| SMART DISPATCH US LLC | 4564151 | TORRINGTON | 1 |
| SMARTWAY LLC | 2946467 | SHERIDAN | 0 |
| SMG TRANSPORT INC | 4127126 | CASPER | 1 |
| SMILEY FACE LOGISTICS LLC | 4366146 | DOUGLAS | 1 |
| SMITH CONSTRUCTION | 4260487 | CASPER | 3 |
| SMITH OILFIELD SERVICE INC | 833402 | THERMOPOLIS | 14 |
| SMITH RV SALES AND SERVICE INC | 1513033 | EVANSVILLE | 2 |
| SMITH TRANSFER & STORAGE INC | 2346403 | RAWLINS | 3 |
| SMOKIN SPUR LLC | 1817652 | GILLETTE | 1 |
| SMOOTH MOVERS LLC | 2630599 | LARAMIE | 7 |
| SMOOTH OPERATORS LLC | 4401375 | CHEYENNE | 5 |
| SMV ROAD LLC | 4403195 | SHERIDAN | 1 |
| SNAKE RIVER EXCAVATION LLC | 3856144 | JACKSON | 3 |
| SNAKE RIVER MECHANICAL ELECTRICAL PLUMBING COMPLETE INC | 3044042 | JACKSON | 2 |
| SNAKE RIVER PARK FLOAT INC | 897906 | JACKSON | 3 |
| SNATCHEM TOWING AND RECOVERY LLC | 4514321 | CASPER | 1 |
| SNOW KING RESORT HOTEL LLC | 1773241 | JACKSON | 1 |
| SNOW PEAK DESIGN BUILD LLC | 4406050 | ALPINE | 1 |