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- U.S. Fish and Wildlife Service1
- Uganda Bureau of Statistics (UBOS)1
- United Nations. Office for the Coordination of Humanitarian Affairs1
- United States. Forest Service1
- United States. National Environmental Satellite, Data, and Information Service1
- United States. National Marine Fisheries Service1
- United States. National Ocean Service1
- United States. Office of Coast Survey1
- Uruguay. Geographic Military Service1
- Virtue, George, 1793?-18681
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- Wall, Walter E.1
- Wauthier, J.M.1
- Weller, Edward, d. 18841
