- U.S. Agency for International Development (USAID)
- U.S. Department of Health and Human Services (HHS)
- U.S. Department of Housing and Urban Development (HUD)
- U.S. Department of Veterans Affairs
- U.S. Dollar Index (USDX)
- U.S. House Financial Services Committee
- U.S. Savings Bond Adjustment
- U.S. Savings Bonds
- U.S. Treasury
- U.S.-Mexico Trade Agreement
- U-6 (Unemployment) Rate
- Uberrimae Fidei Contract
- UBS
- UCC-1 Statement
- UCLA Anderson School of Management
- UDAAP
- Ugandan Shilling UGX
- Ukrainian Hryvnia UAH
- Ulcer Index (UI)
- Ultima
- Ultimate Mortality Table
- Ultimate Net Loss
- Ultimate Oscillator
- Ultimogeniture
- Ultra ETF
- Ultra Vires Acts
- Ultrafast Trading
- Ultra-High Net-Worth Individual (UHNWI)
- Umbrella Insurance Policy
- Umbrella Personal Liability Policy
- Umpire Clause
- UN Principles for Responsible Investment (PRI)
- Unadjusted Basis
- Unaffiliated Investments
- Unallocated Loss Adjustment Expenses (ULAE)
- Unamortized Bond Discount
- Unamortized Bond Premium
- Unappropriated Retained Earnings
- Unauthorized Insurer
- Unbanked
- Unbiased Predictor
- Up Volume
- Up/Down Gap Side-by-Side White Lines
- Up-and-In Option
- Up-and-Out Option
- Up-Front Mortgage Insurance (UFMI)
- Upfront Pricing
- Upgrade
- Uphold
- Up-Market Capture Ratio
- Upper Class
- Urban Development Act Of 1970
- Uruguayan Pesos UYU
- US Christmas Day Holiday
- US Columbus Day Holiday
- US Holiday New Year's Day
- US Holiday Presidents' Day
- US Independence Day Holiday
- US Labor Day Holiday
- US Martin Luther King Holiday (MLK)
- US Thanksgiving Day Holiday
- US Veterans Day Holiday
- Usance
- U-Shaped Recovery
- Usual, Customary, and Reasonable Fees
- Usufruct
- Usury
- Usury Laws
- Usury Rate
- Utilitarianism
- Utilities Industry ETF
- Utilities Sector
- Utilities Select Sector SPDR Fund (XLU)
- Utility
- Utility Patent
- Utility Revenue Bond
- Utilization Fee
- UTXO
- Uzbekistani Sum UZS