| Zoneton Fire Protection District KY | Public Administration | 0 | - | D |
| Zonge International, Inc. AZ | Professional & Technical Services | 2 | $80,315 | - |
| Zoni Language Centers Inc NY | Educational Services | 1 | $76,232 | - |
| Zoo Med Laboratories Inc CA | Wholesale Trade | 0 | - | F |
| Zoo Printing KY | - | 0 | - | - |
| Zook Molasses Co. PA | Wholesale Trade | 0 | - | F |
| Zoological Society of Buffalo NY | Arts & Entertainment | 0 | - | D |
| Zoological Society of Cincinnati aka Cincinnati Zoo & Botanical Garden OH | Arts & Entertainment | 0 | - | D |
| Zoological Society Of Philadelphia PA | Arts & Entertainment | 0 | - | F |
| Zoological Society of Pittsburgh DBA Pittsburgh Zoo & Aquarium PA | Arts & Entertainment | 0 | - | F |
| Zoological Society of San Diego CA | Arts & Entertainment | 2 | $104,105 | - |
| Zoological Society of San Diego dba San Diego Zoo Global CA | - | 0 | - | - |
| Zoom Communications, Inc. CA | Professional & Technical Services | 169 | $178,620 | - |
| Zoom Drain PA | Administrative & Waste Services | 0 | - | F |
| Zoom Drain New England ME | Administrative & Waste Services | 0 | - | F |
| Zoom Video Communications, Inc. CA | Professional & Technical Services | 35 | $155,861 | - |
| ZoomInfo Technologies, LLC WA | Information & Media | 33 | $213,000 | - |
| Zoomlion Heavy Industry NA, Inc. WI | - | 0 | - | - |
| ZoomLogi, Inc. CA | - | 1 | $215,000 | - |
| Zoomrx, INC. MA | Professional & Technical Services | 2 | $130,000 | - |
| Zoox Inc. CA | Transportation & Warehousing | 274 | $185,412 | C |
| Zoox Inc. NV | Transportation & Warehousing | 0 | - | C |
| Zooz Technology Corporation CA | Professional & Technical Services | 1 | $120,000 | - |
| Zora Labs, Inc NY | Professional & Technical Services | 3 | $155,704 | - |
| Zorbis INC TX | Professional & Technical Services | 1 | $106,995 | - |
| Zoro Tools, Inc. IL | Other Services | 5 | $173,989 | A |
| Zoroco Packaging, Inc. ID | Manufacturing | 0 | - | C |
| Zorrn Company, INC FL | Construction | 0 | - | F |
| Zosh Tech LLC TX | - | 1 | $112,923 | - |
| Zotec Partners, LLC IN | Professional & Technical Services | 2 | $84,094 | - |
| Zoup NE | - | 0 | - | - |
| Zovich & Sons Inc. CA | - | 2 | $120,000 | - |
| Zovio & Ashford University Building CA | - | 0 | - | - |
| Zowta LLC TX | Information & Media | 2 | $235,352 | - |
| ZP Better Together, LLC CA | - | 0 | - | - |
| zPaper, Inc. GA | Professional & Technical Services | 1 | $125,000 | - |
| ZPE Systems, Inc. CA | Professional & Technical Services | 1 | $191,311 | - |
| ZPMC NA East Coast Inc. NJ | Transportation & Warehousing | 0 | - | F |
| ZPMC North America, Inc. CA | Real Estate | 1 | $81,432 | - |
| Zprocis Solutions, Inc. FL | - | 3 | $133,000 | - |
| Zreya Tech INC TN | Professional & Technical Services | 11 | $97,386 | - |
| ZRG Partners LLC NJ | - | 1 | $175,000 | - |
| ZS Associates, Inc. IL | Professional & Technical Services | 242 | $164,000 | - |
| Zscale, LLC NC | Professional & Technical Services | 3 | $106,579 | - |
| Zscaler, Inc. CA | Professional & Technical Services | 124 | $187,601 | - |
| Zsdvm Dc, PLLC NY | - | 1 | $160,500 | - |
| Zsdvm IL, PLLC NY | - | 1 | $82,826 | - |
| ZSFab, Inc. MA | Professional & Technical Services | 1 | $84,531 | - |
| ZT Group Int'l, Inc NJ | Manufacturing | 23 | $115,637 | - |
| ZT Group Int'l, Inc. NJ | - | 13 | $139,506 | - |