| United Southern Bank | Kentucky |
| United Southern Bank | Florida |
| United Southwest Bank | Minnesota |
| United State Bank | Missouri |
| United States Senate Federal Credit Union | Virginia |
| United Teletech Financial Federal Credit Union | New Jersey |
| United Texas Bank | Texas |
| United Trust Bank | Illinois |
| United Valley Bank | North Dakota |
| United VIP Credit Union | Michigan |
| Uniti Bank | California |
| Unitus Community Credit Union | Oregon |
| Unity Bank | Minnesota |
| Unity Bank | Wisconsin |
| Unity Bank | New Jersey |
| Unity Bank North | Minnesota |
| Unity Catholic Federal Credit Union | Ohio |
| Unity Credit Union | Michigan |
| Unity National Bank of Houston | Texas |
| Unity One Credit Union | Texas |
| Universal 1 Credit Union | Ohio |
| Universal Bank | California |
| Universal City Studios Credit Union | California |
| Universal Credit Union | Kansas |
| Universal Federal Credit Union | West Virginia |
| University Bank | Michigan |
| University & Community Federal Credit Union | Oklahoma |
| University Credit Union | California |
| University Credit Union | Florida |
| University Credit Union | Maine |
| University Federal Credit Union | Texas |
| University Federal Credit Union | North Dakota |
| University First Federal Credit Union | Utah |
| University Health Federal Credit Union | Georgia |
| University of Hawaii Federal Credit Union | Hawaii |
| University of Illinois Employees Credit Union | Illinois |
| University of Iowa Community Credit Union | Iowa |
| University of Kentucky Federal Credit Union | Kentucky |
| University of Louisiana Federal Credit Union | Louisiana |
| University of Michigan Credit Union | Michigan |
| University of Nebraska Federal Credit Union | Nebraska |
| University of South Alabama Federal Credit Union | Alabama |
| University of Toledo Federal Credit Union | Ohio |
| University of Wisconsin Credit Union | Wisconsin |
| University of Wisconsin-Oshkosh Credit Union | Wisconsin |
| University Settlement Federal Credit Union | New York |
| University & State Employees Credit Union | California |
| Univest | Pennsylvania |
| UniWyo Federal Credit Union | Wyoming |
| UNO Federal Credit Union | Louisiana |
| U. of P. Federal Credit Union | Pennsylvania |
| U.P. Catholic Credit Union | Michigan |
| U.P. Connection Federal Credit Union | Nebraska |
| U.P. Employees Federal Credit Union | Arkansas |
| Upper Cumberland Federal Credit Union | Tennessee |
| Upper Darby Bell Telco Federal Credit Union | Pennsylvania |
| Upper Michigan Community Credit Union | Michigan |
| Upper Peninsula State Bank | Michigan |
| UPS Employees Credit Union | Tennessee |
| UPS Employees Federal Credit Union | California |
| UP State Credit Union | Michigan |
| Upstate Federal Credit Union | South Carolina |
| Upstate Milk Employees Federal Credit Union | New York |
| Upstate Telco Federal Credit Union | New York |
| Urbana Municipal Employes Credit Union | Illinois |
| Urbana Postal Credit Union | Illinois |
| Urban Partnership Bank | Illinois |
| Urban Upbound Federal Credit Union | New York |
| URE Federal Credit Union | Pennsylvania |
| URW Community Federal Credit Union | Virginia |
| US #1364 Federal Credit Union | Indiana |
| USAA Federal Savings Bank | Texas |
| USAA Savings Bank | Nevada |
| USAgencies Credit Union | Oregon |
| USAlliance Federal Credit Union | New York |
| USAmeriBank | Florida |
| U.S. Bank | Ohio |
| USB Employees Federal Credit Union | California |
| USC Credit Union | California |
| U.S. Century Bank | Florida |
| US Community Credit Union | Tennessee |
| U.S. Courthouse S.D.N.Y. Federal Credit Union | New York |
| USDA Credit Union | Iowa |
| U.S. Eagle Federal Credit Union | New Mexico |
| USE Credit Union | Texas |
| USE Federal Credit Union | Oklahoma |
| Usem Mena Federal Credit Union | Arkansas |
| US Employees Credit Union | Illinois |
| U S Employees Federal Credit Union | West Virginia |
| US Federal Credit Union | Minnesota |
| USF Federal Credit Union | Florida |
| USI Federal Credit Union | Texas |
| US Metro Bank | California |
| USNE Penitentiary Employees Federal Credit Union | Pennsylvania |
| USNY Bank | New York |
| US Pipe Bessemer Employees Federal Credit Union | Alabama |
| USPLK Employees Federal Credit Union | Kansas |
| U.S. Postal Service Federal Credit Union | Maryland |
| USSCO Federal Credit Union | Pennsylvania |
| USTC Employees Credit Union | Tennessee |