The US National Team doesn't happen to have an official nickname, though the "Yanks" and the "Red, White and Blue" have been used at times throughout the years. Most every other country around the world's national team does have a nickname, with many of the best ones coming from both the CONCACAF region (Grenada is the "Spice Boyz") and from African nations (Cameroon is the "Indomitable Lions").
Here is a look at some of the more creative and well-known nicknames from countries around the world:
Africa
Algeria: Desert Warriors
Angola: Black Impalas
Benin: Squirrels
Botswana: Zebras
Burkina Faso: Stallions
Cameroon: Indomitable Lions
Congo: Red Devils
Congo DR: Simbas
Egypt: Pharaohs
Gabon: Panthers
Gambia: Scorpions
Ghana: Black Stars
Ivory Coast: Elephants
Kenya: Harambee Stars
Lesotho: Likoena
Liberia: Lone Star
Madagascar: Scorpions
Malawi: Flames
Mali: Eagles
Morocco: Atlas Lions
Mozambique: Mambas
Namibia: Brave Warriors
Niger: Gazelles
Nigeria: Super Eagles
Rwanda: Bees
Saudi Arabia: The Sons of the Desert
Senegal: Lions
Sierra Leone: Leone Stars
Somalia: Ocean Stars
South Africa: Bafana Bafana
Swaziland: Sihlangu
Togo: Sparrow Hawks
Tunisia: Carthage Eagles
Uganda: Cranes
Zambia: Chipolopolo
Zimbabwe: Warriors
Asia
Iran: Team Melli
Japan: Boys in Blue
Korea Republic: Taeguk Warriors or Asian Tigers
Singapore: Lions
CONCACAF
Barbados: Bajans
Canada: Maple Leafs
Costa Rica: Ticos
El Salvador: Guanacos
Grenada: Spice Boyz
Guatemala: Chapines
Honduras: Catrachos
Jamaica: Reggae Boyz
Mexico: Tricolores
Panama: Canaleros
Puerto Rico: Vaqueros
St. Kitts-Nevis: Sugar Boys
St. Vincent-Grenadines: Vincy Heat
Trinidad & Tobago: Soca Warriors
CONMEBOL
Argentina: Albiceleste
Brazil: Seleçao or Samba Boys
Chile: la Roja
Colombia: Cafeteros
Ecuador: Tricolor
Paraguay: Guaranis
Peru: Incas
Uruguay: Charruas
Venezuela: Vinotinto
Oceania
Australia: Socceroos
New Zealand: All Whites
UEFA
Belgium: Red Devils
Croatia: Vatreni
Czech Republic: The Locomotive
Denmark: Danish Dynamite
England: Three Lions
France: Les Bleus
Germany: Die Mannschaft
Ireland: Boys in Green
Italy: Azzurri
Netherlands: Oranje
Poland: Bialoczerwoni
Portugal: Team of Shields
Romania: Tricolorii
Serbia-Montenegro: Plavi
Spain: La Furia
Sweden: The Blue and Golds
Switzerland: Die Eidgenossen
Ukraine: Zbirna