Embassy of South Korea, Washington, D.C.

The Permanent Mission of Mexico to the Organization of American States is the diplomatic mission of Mexico to the Organization of American States in Washington D.C..

The Marshallese ambassador in Washington, D. C. is the official representative of the Government in Majuro to the Government of the United States.

The Embassy of Zambia in Washington, D.C. is the diplomatic mission of the Zambia to the United States. It is located at 2419 Massachusetts Avenue, Northwest, Washington, D.C., in the Embassy Row neighborhood.The Ambassador is Sheila Siwela.

The Zambian ambassador in Washington, D. C. is the official representative of the Government in Lusaka to the Government of the United States.

The Ivorian ambassador in Washington, D.C. is the official representative of the Government in Abidjan to the Government of the United States.

The Embassy of Slovenia in Washington, D.C. is the Republic of Slovenia's diplomatic mission to the United States. The embassy in Washington is also responsible for representing Slovenia in Mexico. The chancery is located just off Embassy Row at 2410 California Street NW in the Kalorama neighborhood. Consular assistance is also provided by Slovenia's network of consulates in the U.S. and Mexico.Slovenia's current ambassador to the United States is Tone Kajzer. Ambassador Kajzer presented his letter of credence to President Donald Trump in 2021. He also serves as ambassador to Mexico, Costa Rica, and Panama and as a permanent representative to the Organization of American States and the Caribbean Community.

The Slovene ambassador in Washington, D. C. is the official representative of the Government in Ljubljana to the Government of the United States.

The Embassy of Lesotho in Washington, D.C. is the diplomatic mission of the Kingdom of Lesotho to the United States. It is located at 2511 Massachusetts Avenue, Northwest, Washington, D.C., in the Embassy Row neighborhood.The Ambassador is Gabriel Sankatana Maja.

The Mosotho ambassador in Washington, D. C. is the official representative of the Government in Maseru to the Government of the United States.

The Embassy of Japan in Washington, D.C. (在アメリカ合衆国日本国大使館, Zai Amerika Gasshūkoku Nihonkoku Taishikan) is the diplomatic mission of Japan to the United States. It is located at 2520 Massachusetts Avenue NW, Washington, D.C., in the Embassy Row neighborhood. In addition to serving as Japan's diplomatic mission in the United States, the embassy provides Japanese consular services to residents of the District of Columbia, Virginia, and Maryland.

Massachusetts Avenue is a major diagonal transverse road in Washington, D.C., and the Massachusetts Avenue Historic District is a historic district that includes part of it. Appearing in Peter Charles L'Enfant's original plan, Massachusetts Avenue crosses three of Washington's four quadrants. It intersects every major north–south street and passes numerous Washington landmarks. It is a landmark itself, long considered the northern boundary of the downtown as well as home of Washington's Embassy Row. Massachusetts Avenue is tied with Pennsylvania Avenue as the widest road in the District, at 160 feet (49 m). The two roads run in parallel through much of the city, Massachusetts about seven blocks north of Pennsylvania. Massachusetts Avenue was long Washington's premier residential street, as Pennsylvania was once its most sought-after business address. Both streets were named after states with prominent roles in the American Revolution: Massachusetts and Pennsylvania. The historic district is an 81-acre (33 ha) area that includes 150 contributing buildings and 3 contributing structures. It was listed on the National Register of Historic Places in 1985. It includes multiple properties that are individually listed on the National Register.

The Chadian ambassador in Washington, D. C. is the official representative of the Government in N'Djamena to the Government of the United States.