| BST LLC | 4248210 | AMES | 1 |
| BT CONSTRUCTION LLC | 3854274 | CLIVE | 100 |
| BT FARMS INC | 2000494 | WELLMAN | 3 |
| BTA TOWING LLC | 3348110 | GRAND MOUND | 0 |
| BTA TRUCKING LLC | 3011376 | VAIL | 1 |
| BTB TRANSPORT LLC | 4140793 | DES MOINES | 1 |
| BTI LOGISTICS INC | 2239033 | DES MOINES | 0 |
| BTI SPECIAL COMMODITIES INC | 159837 | DES MOINES | 13 |
| BTKS ENTERPRISES LLC | 4293665 | HARCOURT | 1 |
| BTR TRANSPORTATION LLC | 761188 | MILLFORD | 2 |
| BUBBA'S LIVESTOCK LLC | 1360852 | ALVORD | 1 |
| BUCH AG PUMPING LLC | 3562953 | FAIRFIELD | 20 |
| BUCHANAN PREMIERE TRUCKING LLC | 3583925 | WAUKEE | 2 |
| BUCHEIT FAMILY FARMS | 3390948 | MC GREGOR | 1 |
| BUCHHOLTZ CUSTOM TRUCKING INC | 1063796 | WYOMING | 1 |
| BUCK CREEK HOPS LLC | 3458524 | SOLON | 1 |
| BUCK FAMILY FARMS | 2934089 | ANAMOSA | 2 |
| BUCK HUMMER TRUCKING INC | 73471 | CEDAR RAPIDS | 1 |
| BUCK MOON TRUCKING LLC | 4494642 | NORTH LIBERTY | 1 |
| BUCK'S UPI INC | 3330649 | MASON CITY | 1 |
| BUCKEYE COOPERATIVE ELEVATOR CO | 748053 | BUCKEYE | 16 |
| BUCKEYE FARMS | 8724437 | PRESTON | 3 |
| BUCKINGHAM AUTO CRUSHING INC | 298803 | LEON | 4 |
| BUCKINGHAM TRANSPORT INC | 1579042 | LEON | 1 |
| BUCKLEY TRUCKING LLC | 2403762 | DES MOINES | 1 |
| BUCKSHOT EXPRESS LLC | 1445394 | LAPORTE CITY | 2 |
| BUCKSHOT TRANSPORTATION INC | 2259497 | HULL | 2 |
| BUCKWALTER MOTORS INC | 742870 | WELLMAN | 2 |
| BUCKWALTER MOTORS LTD | 822672 | WASHINGTON | 1 |
| BUD JONES CONSTRUCTION CO INC | 237800 | OSCEOLA | 10 |
| BUD JONES TRANSPORT INC | 1106873 | OSCEOLA | 3 |
| BUD L ROBEY | 1105290 | NEVADA | 1 |
| BUD MAAS CONCRETE INC | 731011 | CORALVILLE | 1 |
| BUD'S SERVICE CENTER LTD | 915041 | AMES | 3 |
| BUDD AUTO TRANSPORT LLC | 2854949 | WEST DES MOINES | 1 |
| BUDD LOGISTICS LLC | 3221415 | WEST DES MOINES | 0 |
| BUDDEN WELL AND PLUMBING SERVICES INC | 2274516 | DYERSVILLE | 2 |
| BUDDENBERG TRUCKING LLC | 1729238 | DECORAH | 1 |
| BUDS | 4219697 | MEDIAPOLIS | 0 |
| BUDS PARCEL LOGISTICS LLC | 4033971 | BREDA | 2 |
| BUECHELE FARMS | 842081 | GRAFTON | 2 |
| BUEHNEMAN INC | 1615528 | DELTA | 1 |
| BUENTING TRUCKING LLC | 2978055 | OTHO | 1 |
| BUFF CREEK TRUCKING LLC | 3323177 | WINFIELD | 1 |
| BUFFALO BAY GRAIN INC | 2116147 | COGGON | 3 |
| BUFFALO MOUND AG LC | 2565069 | MANSON | 1 |
| BUFORD DOZING & EXCAVATING LLC | 1987138 | BONAPARTE | 1 |
| BUGA BROKERAGE INC | 4180080 | IOWA CITY | 0 |
| BUHR CHEVROLET-BUICK | 736486 | TRIPOLI | 1 |
| BUILDERS KITCHEN AND SUPPLY CO | 1065975 | DES MOINES | 3 |
| BUILDERS SELECT LLC | 2801488 | CEDAR FALLS | 5 |
| BUILDERS TRANSPORTATION INC | 671322 | CEDAR RAPIDS | 27 |
| BUILDING MATERIAL INC | 1494704 | FT MADISON | 3 |
| BULINE FARMS LLC | 726164 | LONE TREE | 4 |
| BULK ENTERPRISES LLC | 4531247 | GRIMES | 1 |
| BULK EXPRESS INC | 2222629 | CLARINDA | 0 |
| BULK FLUID SYSTEMS LLC | 2837102 | EVANSDALE | 15 |
| BULK TRANSPORTATION LLC | 3166344 | FORT DODGE | 3 |
| BULKONE LLC | 7526013 | DES MOINES | 1 |
| BULL GOD CATTLE TRANSPORT LLC | 3014743 | MC GREGOR | 2 |
| BULL MOOSE HEAVY HAUL INC | 2910607 | MANCHESTER | 2 |
| BULL RUN LAND AND CATTLE LP | 3151048 | LE MARS | 1 |
| BULL-HAY INC | 500368 | PRESTON | 4 |
| BULLDOG EXPRESS LLC | 2591688 | OTTUMWA | 5 |
| BULLDOG TRUCKING LLC | 1606746 | PAULLINA | 2 |
| BULLERMAN FARMS LLC | 2487595 | CALMAR | 1 |
| BULLET FREIGHT | 4544240 | CEDAR RAPIDS | 3 |
| BULLOCK AG SERVICE | 668923 | PRESTON | 10 |
| BULLOCK'S INC | 53750 | MAQUOKETA | 22 |
| BULLY TOWING & RECOVERY LLC | 3988861 | WEST LIBERTY | 1 |
| BULO TRANSPORTATION LLC | 3856412 | SIOUX CITY | 1 |
| BULS FARMS & TRUCKING LLC | 1578903 | TRIPOLI | 3 |
| BULS FARMS LLC | 2025215 | SUMNER | 3 |
| BUMANN FARM SUPPLY INCORPORATED | 2965503 | CALAMUS | 3 |
| BUNKERS FEED & SUPPLY INC | 524926 | GRANVILLE | 14 |
| BUR OAK KUSTOMZ LLC | 3221739 | LOWDEN | 1 |
| BURBRIDGE REPAIR LLC | 3929448 | MONDAMIN | 1 |
| BURCHLAND MANUFACTURING INCORPORATED | 2161241 | GILMAN | 2 |
| BURCHLAND TRUCKING LLC | 930847 | GILMAN | 1 |
| BURCO TRUCKING INC | 179905 | INDEPENDENCE | 2 |
| BURDICK LOGISTICS | 3324142 | COUNCIL BLFS | 0 |
| BURDS TRUCKING LLC | 4572800 | EPWORTH | 1 |
| BURDS WATERPROOFING INC | 2431630 | PEOSTA | 1 |
| BURESH BUILDING SYSTEMS INC | 1951082 | HAMPTON | 3 |
| BURICH TRUCKING LLC | 3278482 | RIVERSIDE | 1 |
| BURKARD CATTLE CO | 1675934 | LARCHWOOD | 2 |
| BURKE ENGINEERING SALES CO | 400814 | SIOUX CITY | 2 |
| BURKE MARKETING CORPORATION | 452554 | NEVADA | 5 |
| BURKEN FARMS LLC | 1991012 | CLINTON | 1 |
| BURKEN UNDERGROUND | 2002141 | MAQUOKETA | 16 |
| BURKHARDT TRUCKING AND LIVESTOCK INC | 832316 | OSAGE | 1 |
| BURKHEIMER INC | 312294 | KELLERTON | 2 |
| BURKHOLDER CUSTOM FARMING | 3637708 | CHARLES CITY | 4 |
| BURKMAN TRUCKING LLC | 4149804 | PELLA | 5 |
| BURLINGTON CAB COMPANY LLC | 4082303 | BURLINGTON | 3 |
| BURLINGTON SHORTLINE RAILROAD | 1452846 | BURLINGTON | 9 |
| BURLINGTON WILBERT VAULT WORKS INC | 468024 | BURLINGTON | 7 |
| BURNHAM ELECTRICAL SERVICES AND TECHNOLOGIES INC | 2941750 | MISSOURI VALLEY | 2 |
| BURNS & SON'S DIRECT APPLIANCES | 1904329 | BURLINGTON | 1 |
| BURNS FARMS | 1761944 | BLOOMFIELD | 2 |