| Y 3.N 16 | National Narcotics Intelligence Consumers Committee (1978-?) |
| Y 3.N 21/1 | Commission on Naturalization (1905) |
| Y 3.N 21/2 | National Monetary Commission (1908-1912) |
| Y 3.N 21/3 | National Waterways Commission (1909-1911) |
| Y 3.N 21/4 | National Coast-Defense Board (1905-1906) |
| Y 3.N 21/5 | National Advisory Committee for Aeronautics (1915- 1958) |
| Y 3.N 21/6 | National Forest Reservation Commission (1911-1976) |
| Y 3.N 21/7 | National Commission on Law Observance and Enforcement (1929- 1931) |
| Y 3.N 21/8 | National Recovery Administration (1933-1935) |
| Y 3.N 21/9 | National Emergency Council (1933-1939) |
| Y 3.N 21/10 | National Labor Board (1933-1934) |
| Y 3.N 21/11 | National Recovery Review Board (1934) |
| Y 3.N 21/12 | National Resources Committee (1935-1939) |
| Y 3.N 21/13 | National Labor Relations Board (1934-1935) |
| Y 3.N 21/14 | National Youth Administration (1935-1939) |
| Y 3.N 21/15 | National Interregional Highway Committee (1941-1944) |
| Y 3.N 21/16 | National Advisory Council on International Monetary and Financial Policies (1966- ) |
| Y 3.N 21/17 | National Security Council (1947-1949) |
| Y 3.N 21/17:101 | Central Intelligence Agency (1947-1949) |
| Y 3.N 21/18 | National Security Resources Board (1947-1949) |
| Y 3.N 21/19 | National Security Training Commission (1951-1957) |
| Y 3.N 21/20 | National Capital Sesquicentennial Commission (1947-1952) |
| Y 3.N 21/21 | National Capital Transportation Agency (1960-1967) |
| Y 3.N 21/22 | National Commission on Food Marketing (1964) |
| Y 3.N 21/23 | National Visitor Facilities Advisory Commission (1968-1975) |
| Y 3.N 21/24 | National Water Commission (1968-1973) |
| Y 3.N 21/25 | National Commission on Product Safety (1967-1970) |
| Y 3.N 21/26 | National Commission on Reform of Federal Criminal Laws (1966- 1971) |
| Y 3.N 21/27 | National Business Council for Consumer Affairs (1971- 1973) |
| Y 3.N 21/28 | National Academy of Public Administration |
| Y 3.N 21/29 | Corporation for National and Community Service (1993- ); Senior Corps (1993- ) |
| Y 3.N 22 | Navajo and Hopi Indian Relocation Commission |
| Y 3.N 27 | Near East Relief (1920) |
| Y 3.N 31 | National Commission on Neighborhoods (1977-1979) |
| Y 3.N 42 | New Jersey Tercentenary Celebration Commission (1960) |
| Y 3.N 42/2 | New England Regional Commission (1965-1981) |
| Y 3.N 42/3 | New England River Basins Commission (1967-1981) |
| Y 3.N 51 | Nicaragua Canal Commission (1897-1899) |
| Y 3.N 81 | Northwest Territory Celebration Commission (1935-1939) |
| Y 3.N 81/2 | North Carolina Tercentenary Celebration Commission (1935-1938) |
| Y 3.N 81/3 | North Atlantic Regional Water Resources Study Coordinating Committee (1965-?) |
| Y 3.N 81/4 | Northern Great Plains Resources Program |
| Y 3.N 81/5 | Northwest Federal Regional Council (1977-?) |
| Y 3.N 81/6 | Northern Mariana Islands Commission (1976-1985) |
| Y 3.N 81/7 | Northwest Indian Fisheries Commission |
| Y 3.N 81/8 | Northwest Power and Conservation Council (1980- ) |
| Y 3.N 88 | Nuclear Regulatory Commission (1975- ) |
| Y 3.N 88/2 | Nuclear Waste Technical Review board (1989- ) |
| Y 3.N 95 | National Nutrition Monitoring Advisory Council (1991-2002) |
