| AC TRUCKING SERVICE LLC | 4057806 | HYATTSVILLE | 2 |
| ACADEMICS INSTITUTE LLC | 4502240 | BALTIMORE | 1 |
| ACADEMY FACILITY MANAGEMENT CORP | 1557063 | ANNAPOLIS | 1 |
| ACADEMY FORD LLC | 4131763 | LAUREL | 1 |
| ACADEMY POOL SERVICES INC | 3042594 | SYKESVILLE | 4 |
| ACADIA BADOLATO STONE SUPPLY LLC | 3829246 | COCKEYSVILLE | 3 |
| ACADIA CONTRACTORS INC | 1653772 | CABIN JOHN | 1 |
| ACADIA LANDSCAPING INC | 1051872 | PASADENA | 7 |
| ACADIA WINDOW & DOORS LLC | 1056373 | BALTIMORE | 3 |
| ACANO JEWELRY & ACCESSORIES LLC | 9556265 | PIKESVILLE | 1 |
| ACC TRANSPORT LLC | 3139208 | CLINTON | 1 |
| ACCELA WORLDWIDE SOLUTIONS INC | 281858 | HAGERSTOWN | 7 |
| ACCELERATED LOGISTIC SERVICES LLC | 4196626 | FREDERICK | 1 |
| ACCELERATION LOGISTICS LLC | 4094640 | HALETHORPE | 5 |
| ACCENT BUILDERS LLC | 2597837 | HANCOCK | 1 |
| ACCENT CONSTRUCTION LLC | 2899924 | ODENTON | 1 |
| ACCENT SUPPLY LLC | 1446639 | WESTMINSTER | 1 |
| ACCENT TREE MOVERS LLC | 1413523 | ROCKVILLE | 1 |
| ACCESS AUTOBROKERS LLC | 2285957 | HAGERSTOWN | 1 |
| ACCESS DEMOLITION CONTRACTING INC | 1397851 | BALTIMORE | 4 |
| ACCESS FLOOR DELIVERY SYSTEMS INC | 695854 | GLEN BURNIE | 1 |
| ACCESS TREE SERVICE LLC | 2552221 | BALTIMORE | 8 |
| ACCESSIBLE CONSTRUCTION SUPPLY INC | 1314046 | HUNTINGTOWN | 2 |
| ACCKOKEEK DEVELOPMENT CORPORATION | 1215979 | CLINTON | 2 |
| ACCU-CRETE INC | 800091 | UPPER MARLBORO | 40 |
| ACCUBID CIVIL CONSTRUCTION INC | 2163844 | MOUNT AIRY | 12 |
| ACCUBUILD CONSTRUCTION INC | 3361168 | BELTSVILLE | 2 |
| ACCUMAIL INC | 421041 | LANDOVER | 2 |
| ACCURATE ASPHALT LLC | 2597581 | STEVENSVILLE | 3 |
| ACCURATE INFRASTRUCTURE DATA INC | 2184513 | BALTIMORE | 4 |
| ACCURATE INSULATION OF UPPER MARLBORO LLC | 2955204 | UPPER MARLBORO | 44 |
| ACCURATE LAWN & LANDSCAPE | 9166599 | WESTMINSTER | 1 |
| ACCURATE LAWNSCAPES LLC | 3735939 | MILLERSVILLE | 1 |
| ACCURATE MOVERS LLC | 1144085 | CAMBRIDGE | 2 |
| ACCURATE SEALCOATING AND PAVING | 1657478 | BALTIMORE | 2 |
| ACCURATE SOLUTIONS ENTERPRISE LLC | 4579824 | EDGEWOOD | 1 |
| ACCURIGHT2 LLC | 4558891 | BOWIE | 1 |
| ACCUTAL LLC | 3464417 | GWYNN OAK | 1 |
| ACCUTRANS INC | 1814608 | SILVER SPRING | 2 |
| ACCUTRENCH CONTRACTING LLC | 1234788 | FEDERALSBURG | 34 |
| ACDC TRUCKING LLC | 4542444 | ACCOKEEK | 1 |
| ACE A&A SERVICES LLC | 3554981 | WHITE PLAINS | 1 |
| ACE APPLIANCE | 1447175 | GLEN BURNIE | 1 |
| ACE AUTOMOTIVE INC | 3305210 | BALTIMORE | 2 |
| ACE CONTRACTING INC | 1281515 | BALTIMORE | 1 |
| ACE DELIVERY INC | 997317 | BALTIMORE | 7 |
| ACE ENVIRONMENTAL HOLDINGS LLC | 3199371 | BALTIMORE | 10 |
| ACE ENVIRONMENTAL SERVICES LLC | 1372729 | BALTIMORE | 28 |
| ACE FAMILIA FOOD LLC | 2181335 | GAITHERSBURG | 1 |
| ACE FENCE DECKS PATIO | 3850657 | BOWIE | 0 |
| ACE FIRE EXTINGUISHER SERVICE INC | 298589 | COLLEGE PARK | 12 |
| ACE HAULING INC | 2073853 | OWINGS | 1 |
| ACE HOME IMPROVEMENTS LLC | 3310695 | CROFTON | 3 |
| ACE J TRUCKING LLC | 3476535 | COLLEGE PARK | 1 |
| ACE LAWN & LANDSCAPING LLC | 2003301 | MILLERSVILLE | 1 |
| ACE LAWN CARE SERVICES INC | 2307075 | DARLINGTON | 2 |
| ACE LOGISTICS INC | 4105730 | CATONSVILLIE | 0 |
| ACE MACHINERY SERVICE'S INC | 3376273 | STREET | 1 |
| ACE MASONRY LLC | 1425726 | ROCKVILLE | 2 |
| ACE MOBILE TRUCK AND TRAILER REPAIR LLC | 3358286 | HAVRE DE GRACE | 2 |
| ACE OF SPADES TOWING INC | 2562942 | CAPITOL HEIGHTS | 1 |
| ACE PLUMBING | 1766638 | PERRY HALL | 3 |
| ACE PLUMBING AND HOME SERVICES LLC | 4336736 | EDGEWATER | 1 |
| ACE RENTALS INC | 1139015 | BALTIMORE | 6 |
| ACE ROLL-OFF LLC | 2891612 | DUNDALK | 6 |
| ACE SERVICES LLC | 3051186 | LOTHIAN | 2 |
| ACE SILVER SPRING TOWING | 1444011 | RIVERDALE | 1 |
| ACE SUPPLIES AND SERVICES LLC | 3333076 | WOODBINE | 1 |
| ACE TOWERS LLC | 4004821 | WESTMINSTER | 3 |
| ACE TRANSIT LLC | 2529695 | COLLEGE PARK | 1 |
| ACE TRANSPORT LLC | 2368994 | FRIENDSHIP | 1 |
| ACE TRANSPORTS LLC | 3355200 | WALDORF | 1 |
| ACE TRUCKING & TRANSPORT | 3772923 | MONTGOMRY VLG | 0 |
| ACE TRUCKING SERVICE ,LLC | 927301 | CLARKSBURG | 12 |
| ACE UNDERGROUND LLC | 4881445 | ELKRIDGE | 0 |
| ACE UNIFORM SERVICES INC | 325496 | BALTIMORE | 3 |
| ACE VENDING SOLUTIONS | 1704485 | BALTIMORE | 1 |
| ACEBA BROADUS | 1243900 | UPPER MARLBORO | 1 |
| ACECO LLC | 493553 | SILVER SPRING | 5 |
| ACER LANDSCAPING AND NURSERY LLC | 2410259 | UPPERCO | 1 |
| ACES IN TRANSPORTATION LLC | 3912390 | OWINGS MILLS | 1 |
| ACES TOWING LLC | 2457798 | ANNAPOLIS | 1 |
| ACESDELIVERY LLC | 4529845 | CORDOVA | 0 |
| ACF INCORPORATED | 4493731 | SEVERN | 2 |
| ACG E-RECYCLING | 5505785 | BALTIMORE | 1 |
| ACG E-RECYCLING, LLC | 9802355 | BALTIMORE | 1 |
| ACG LANDSCAPING INC | 4218496 | DUNDALK | 1 |
| ACHENAR TRANSPORT LLC | 3925086 | HAVRE DE GRACE | 4 |
| ACHIEVE INC | 1646116 | OWINGS MILLS | 1 |
| ACHU AND SONS | 4297552 | MOUNT RAINIER | 1 |
| ACI CONTRACTING INC | 1731872 | PYLESVILLE | 1 |
| ACIR LOGISTICS LLC | 4108216 | SUITLAND | 2 |
| ACKER & SONS | 1463686 | KENSINGTON | 1 |
| ACKERMAN AND BAYNES LLC | 493700 | BALTIMORE | 2 |
| ACM CHESAPEAKE LLC | 2014460 | EASTON | 4 |
| ACM LLC | 2121956 | ABERDEEN | 1 |
| ACM SERVICES INC | 1357209 | ROCKVILLE | 6 |
| ACM SERVICES, LLC | 9384370 | HYATTSVILLE | 1 |
| ACME AUTO LLC | 4093427 | GLEN BURNIE | 1 |
| ACME CERAMIC TILE CO | 1305671 | SALISBURY | 3 |