| DASH X, LLCHarper, OR · Active | Harper, OR | LLC | Mar 20, 2014 | Active |
| MARCHEK & SON, INC.Harper, OR · Active | Harper, OR | Corporation | Jun 25, 1975 | Active |
| HARPER CHURCH OF THE NAZARENEHarper, OR · Active | Harper, OR | Nonprofit | Jun 21, 2017 | Active |
| COLEMAN SERVICEHarper, OR · Active | Harper, OR | Other | Dec 20, 1988 | Active |
| ITQC, INCHarper, OR · Active | Harper, OR | Corporation | Mar 26, 2018 | Active |
| HIGH DESERT STRATEGIES, INC.Harper, OR · Active | Harper, OR | Nonprofit | Apr 10, 2019 | Active |
| HAWKEYE SERVICES, LLCHarper, OR · Active | Harper, OR | LLC | Apr 30, 2019 | Active |
| HARPER LADIES CLUBHarper, OR · Active | Harper, OR | Nonprofit | Nov 15, 2019 | Active |
| FREEDOM SPRINKLERS LLCHarper, OR · Active | Harper, OR | LLC | Feb 16, 2022 | Active |
| JUMP CREEK TRAINING AND STABLES LLCHarper, OR · Active | Harper, OR | LLC | Feb 1, 2022 | Active |
| CQC RANCHES, LLCHarper, OR · Active | Harper, OR | LLC | Aug 24, 2022 | Active |
| HOLMES LIVESTOCK LLCHarper, OR · Active | Harper, OR | LLC | Sep 26, 2022 | Active |
| ROMANS RANCHES HOLDINGS, LLCHarper, OR · Active | Harper, OR | LLC | Dec 23, 2022 | Active |
| ROMANS RANCHES, LLCHarper, OR · Active | Harper, OR | LLC | Dec 23, 2022 | Active |
| ROCKIN' E SUNSETHarper, OR · Active | Harper, OR | Other | Jan 6, 2023 | Active |
| EASTERN OREGON WILDHarper, OR · Active | Harper, OR | Other | Mar 12, 2024 | Active |
| LIVERMAN BEEF COMPANY, LLCHarper, OR · Active | Harper, OR | LLC | Dec 2, 2024 | Active |
| WILSON LIVESTOCK ENTERPRISES LLCHarper, OR · Active | Harper, OR | LLC | Jan 27, 2025 | Active |
| CANNON HAY AND LIVESTOCK, LLCHarper, OR · Active | Harper, OR | LLC | Jan 29, 2025 | Active |
| T&R RANCH LLCHarper, OR · Active | Harper, OR | LLC | Mar 7, 2025 | Active |
| 4K JANITORIALHarper, OR · Active | Harper, OR | Other | Jan 12, 2026 | Active |
| CANNON D&T, LLCHarper, OR · Active | Harper, OR | LLC | Jul 16, 2026 | Active |
| PLESION FARM, LLCHarper, OR · Active | Harper, OR | LLC | Sep 24, 2026 | Active |
| I.T. QUARTER CIRCLE RANCHHarper, OR · Active | Harper, OR | Other | Jan 25, 1994 | Active |
| RAFTER R H HAND-TIED ROPE HALTERSHarper, OR · Active | Harper, OR | Other | Dec 8, 2006 | Active |
| SEIDERS FARMS, L.L.C.Harper, OR · Active | Harper, OR | LLC | Jan 23, 1995 | Active |
| AMICK LAND AND LIVESTOCKHarper, OR · Active | Harper, OR | Other | Feb 12, 2008 | Active |
| CR RANCHES LLCHarper, OR · Active | Harper, OR | LLC | Mar 21, 2008 | Active |
| CR LAND HOLDINGS, LLCHarper, OR · Active | Harper, OR | LLC | Jun 5, 2013 | Active |
| SPEAR M QUARTER HORSESHarper, OR · Active | Harper, OR | Other | Jun 5, 2013 | Active |