| Country | Diplomatic representation in the US |
| Jamaica | chief of mission: Ambassador Anthony JOHNSON chancery: 1520 New Hampshire Avenue NW, Washington, DC 20036 telephone: [1] (202) 452-0660 FAX: [1] (202) 452-0081 consulate(s) general: Miami, New York |
| Jan Mayen | void |
| Japan |  chief of mission: Ambassador Ichiro FUJISAKI chancery: 2520 Massachusetts Avenue NW, Washington, DC 20008 telephone: [1] (202) 238-6700 FAX: [1] (202) 328-2187 consulate(s) general: Anchorage, Atlanta, Boston, Chicago, Denver, Detroit, Agana (Guam), Honolulu, Houston, Los Angeles, Miami, New Orleans, New York, Portland (Oregon), San Francisco, Seattle |
| Jersey | none (British crown dependency) |
| Jordan | chief of mission: Ambassador ZEID Ra'ad Zeid al-Hussein, Prince chancery: 3504 International Drive NW, Washington, DC 20008 telephone: [1] (202) 966-2664 FAX: [1] (202) 966-3110 |
| Kazakhstan | chief of mission: Ambassador Yerlan IDRISOV chancery: 1401 16th Street NW, Washington, DC 20036 telephone: [1] (202) 232-5488 FAX: [1] (202) 232-5845 consulate(s): New York |
| Kenya | chief of mission: Ambassador Peter Rateng Oginga OGEGO chancery: 2249 R Street NW, Washington, DC 20008 telephone: [1] (202) 387-6101 FAX: [1] (202) 462-3829 consulate(s) general: Los Angeles |
| Kiribati | Kiribati does not have an embassy in the US; there is an honorary consulate in Honolulu |
| Korea, North | none; North Korea has a Permanent Mission to the UN in New York |
| Korea, South | chief of mission: Ambassador LEE Tae-sik chancery: 2450 Massachusetts Avenue NW, Washington, DC 20008 telephone: [1] (202) 939-5600 FAX: [1] (202) 387-0205 consulate(s) general: Agana (Guam), Atlanta, Boston, Chicago, Honolulu, Houston, Los Angeles, New York, San Francisco, Seattle |
| Kosovo | void |
| Kuwait | chief of mission: Ambassador SALIM al-Abdallah al-Jabir al-Sabah chancery: 2940 Tilden Street NW, Washington, DC 20008 telephone: [1] (202) 966-0702 FAX: [1] (202) 966-0517 |
| Kyrgyzstan | chief of mission: Ambassador Zamira SYDYKOVA chancery: 2360 Massachusetts Ave. NW, Washington, DC 20008 telephone: [1] (202) 338-5141 FAX: [1] (202) 386-7550 consulate(s): New York |
| Laos | chief of mission: Ambassador PHIANE Philakone chancery: 2222 S Street NW, Washington, DC 20008 telephone: [1] (202) 332-6416 FAX: [1] (202) 332-4923 |
| Latvia | chief of mission: Ambassador Andrejs PILDEGOVICS chancery: 2306 Massachusetts Ave. NW, Washington, DC 20008 telephone: [1] (202) 328-2840 FAX: [1] (202) 328-2860 |
| Lebanon |  chief of mission: Ambassador Antoine CHEDID chancery: 2560 28th Street NW, Washington, DC 20008 telephone: [1] (202) 939-6300 FAX: [1] (202) 939-6324 consulate(s) general: Detroit, New York, Los Angeles |
| Lesotho | chief of mission: Ambassador (vacant); Charge d'Affaires Mabasia MOHOBANE chancery: 2511 Massachusetts Avenue NW, Washington, DC 20008 telephone: [1] (202) 797-5533 through 5536 FAX: [1] (202) 234-6815 |
| Liberia | chief of mission: Ambassador Charles A. MINOR chancery: 5201 16th Street NW, Washington, DC 20011 telephone: [1] (202) 723-0437 FAX: [1] (202) 723-0436 consulate(s) general: New York |
| Libya | chief of mission: ambassador (vacant); Charge d'Affaires Ali Suleiman AUJALI chancery: 2600 Virginia Avenue NW, Suite 705, Washington, DC 20037 telephone: [1] (202) 944-9601 FAX: [1] (202) 944-9060 |
| Liechtenstein | chief of mission: Ambassador Claudia FRITSCHE chancery: 888 17th Street NW, Suite 1250, Washington, DC 20006 telephone: [1] (202) 331-0590 FAX: [1] (202) 331-3221 |
| Lithuania | chief of mission: Ambassador Audrius BRUZGA chancery: 4590 MacArthur Blvd. NW, Suite 200, Washington, DC 20007 telephone: [1] (202) 234-5860 FAX: [1] (202) 328-0466 consulate(s) general: Chicago, New York |
| Luxembourg |  chief of mission: Ambassador (vacant); Charge d'Affaires T.H. Nicolas MACKEL chancery: 2200 Massachusetts Avenue NW, Washington, DC 20008 telephone: [1] (202) 265-4171/72 FAX: [1] (202) 328-8270 consulate(s) general: New York, San Francisco |
| Macau | none (special administrative region of China) |
| Macedonia | chief of mission: Ambassador Zoran JOLEVSKI chancery: 2129 Wyoming Avenue NW, Washington, DC 20008 telephone: [1] (202) 667-0501 FAX: [1] (202) 667-2131 consulate(s) general: New York, Southfield (Michigan); note - consulate general in Chicago is due to open in 2008 |