| University of California, Los Angeles | 🍎 | 1 | 5.0★ | Health & Fitness |
| University of Dallas | 🍎 | 1 | 5.0★ | Education |
| University of Dundee | 🍎 | 1 | — | Medical |
| University of Houston | 🍎 | 1 | 4.3★ | Education |
| University of Illinois Community Credit Union | 🍎 | 1 | 4.9★ | Finance |
| University of Limerick | 🍎 | 1 | — | Education |
| University of Louisiana at Lafayette Foundation | 🍎 | 1 | 3.4★ | Business |
| University of Malaya | 🍎 | 1 | 5.0★ | Education |
| University of Miami | 🍎 | 1 | 4.3★ | Medical |
| University of Mississippi | 🍎 | 1 | 4.3★ | Sports |
| University of Missouri-St. Louis, St. Louis Public Radio | 🍎 | 1 | 4.2★ | Music |
| University of Mount Union | 🍎 | 1 | 3.3★ | Education |
| University of Nebraska Medical Center | 🍎 | 1 | 4.5★ | Health & Fitness |
| University of New Brunswick | 🍎 | 1 | 5.0★ | Education |
| University of Newcastle upon Tyne | 🍎 | 1 | 5.0★ | Education |
| University of Notre Dame du Lac | 🍎 | 1 | 3.9★ | Sports |
| University of Oregon | 🍎 | 1 | 3.5★ | Education |
| University of Rhode Island | 🍎 | 1 | 3.7★ | Education |
| University of South Carolina | 🍎 | 1 | 5.0★ | Education |
| University of Utah College of Nursing | 🍎 | 1 | 5.0★ | Health & Fitness |
| University of Virginia Community Credit Union | 🍎 | 1 | 4.5★ | Finance |
| University of Warwick | 🍎 | 1 | — | Education |
| University of Wisconsin - Stevens Point | 🍎 | 1 | 4.5★ | Sports |
| University of Zagreb, FER | 🍎 | 1 | — | Education |
| Université Bordeaux Montaigne | 🍎 | 1 | — | Education |
| Univi Group sp. z o.o. | 🍎 | 1 | 4.8★ | Health & Fitness |
| Uniview Technologies Co., Ltd. | 🍎 | 1 | 3.2★ | Business |
| Uniweb Labs TOV | 🍎 | 1 | 4.7★ | Finance |
| Uniworld Technologies Inc. | 🍎 | 1 | 5.0★ | Business |
| Unknown Level | 🍎 | 1 | 5.0★ | Food & Drink |
| UnknownPhone.com | 🍎 | 1 | 4.5★ | Utilities |
| Unleashed Education | 🍎 | 1 | — | Education |
| Unleashed, LLC | 🍎 | 1 | — | Travel |
| Unlimited Potential Inc. | 🍎 | 1 | 2.0★ | Lifestyle |
| Unlimited Spectrum LLC | 🍎 | 1 | 4.5★ | Business |
| Unlimited Systems | 🍎 | 1 | — | Business |
| Unlimited VPN - Fast&Secure Proxy | 🍎 | 1 | 4.6★ | Utilities |
| Unlimited Wisdom Limited | 🍎 | 1 | 4.9★ | Health & Fitness |
| Unlisted | 🍎 | 1 | 5.0★ | Lifestyle |
| Unlock Futurix Ltd | 🍎 | 1 | — | Finance |
| Unlock Lab Limited | 🍎 | 1 | — | Lifestyle |
| Unlock vision finance | 🍎 | 1 | 5.0★ | Finance |
| Unlocking the Bible | 🍎 | 1 | 4.8★ | Lifestyle |
| Unlockt.me | 🍎 | 1 | 4.4★ | Productivity |
| Unlypt | 🍎 | 1 | 4.6★ | Entertainment |
| Unmasked Solutions PTY LTD | 🍎 | 1 | — | Health & Fitness |
| Unpack'd Technologies, LLC | 🍎 | 1 | 4.3★ | Lifestyle |
| Unparalleled Developers, LLC | 🍎 | 1 | 5.0★ | Music |
| Unplugged Technologies Ltd | 🍎 | 1 | 4.7★ | Social Networking |
| Unroll.Me | 🍎 | 1 | 4.7★ | Productivity |