The list below shows all current U.S. sister city relationships in affected countries. Staff at Sister Cities International are in the process of contacting U.S. partnering communities for the affected countries about relief activities. Cities in italics were directly hit by the tsunamis while the others suffered indirectly.

• BANGLADESH
  No current U.S. sister cities
• BURMA
  No current U.S. sister cities
• INDIA (12 sister cities)
  
  • Bangalore, Karnataka State, sister city to Cleveland, Ohio
  
  
  • Baroda, Gujarat State, sister city to Edison, New Jersey
  
  
  • Calcutta, West Bengal State, sister city to Long Beach, California
  
  
  • Chennai, Tamil Nadu State, sister city to Denver, Colorado
  
  
  • Delhi, National Capital Region, sister city to Chicago, Illinois
  
  
  • Hyderabad, Andhra Pradesh State, sister city to Riverside, California
  
  
  • Jaipur, Rajasthan State, sister city to Fremont, California
  
  
  • Jallandher, Punjab State, sister city to Union City, California
  
  
  • Mumbay, Maharashtra State, sister city to Honolulu, Hawaii and Los Angeles, California
  
  
  • Pune, Maharashtra State, sister city to San Jose, California
  
  
  • Vijayawada, Andhra Pradesh State, sister city to Modesto, California
• INDONESIA (3 sister cities)
  
  • Bandung, Jawa Barat, sister city to Fort Worth, Texas
  
  
  • Jäkär´tä, Jäkär´tä, sister city to Los Angeles, California
  
  
  • Surabaya, Jawa Timur, sister city to Seattle, Washington
• KENYA (9 sister cities)
  
  • Bura, Coast, sister city to Newburyport, Massachusetts
  
  
  • Eldoret, Rift Valley, sister city to Minneapolis, Minnesota
  
  
  • Esabalu, Western, sister city to Amesbury, Massachusetts
  
  
  • Kericho, Rift Valley, sister city to Portsmouth, Virginia
  
  
  • Kisumu, Nyanza, sister city to Roanoke, Virginia
  
  
  • Meru, Eastern, sister city to Long Beach, California
  
  
  • Mombasa, Coast Region, sister city to Seattle, Washington and Honolulu, Hawaii, Mombasa
  
  
  • Nairobi, Nairobi, sister city to Denver, Colorado
  
  
  • Nakuru, Rift Valley, sister city to East Orange, New Jersey
• MALAYSIA (2 sister cities)
  
  • Beaufort, Sabah, sister city to Beaufort, North Carolina
  
  
  • Uma-Bawang, Borneo, sister city to Berkeley, California
• MALDIVES
  No current U.S. sister cities

• SEYCHELLES
  No current U.S. sister cities

• SOMALIA
  No current U.S. sister cities

• SRI LANKA
  No current U.S. sister cities

• TANZANIA, UNITED REPUBLIC OF (4 sister cities)
  
  • Arusha, Arusha Region, sister city to Durham, North Carolina and Kansas City, Missouri
  
  
  • Bagamoyo, Zanzibar Spice Coast Region, sister city to Vallejo, California
  
  
  • Moshi, Kilimanjaro Region, sister city to Delray Beach, Florida
  
  
  • Tanga, Tanga Region, sister city to Toledo, Ohio, this city is located on the coastline which was hit by the tsunamis
• THAILAND (4 sister cities)
  
  • Bangkok, Bangkok Province, sister city to Washington, District of Columbia
  
  
  • Lamphun, Lamphun Province, sister city to Orinda, California
  
  
  • Phuket, Phuket Province, sister city to Las Vegas, Nevada - Phuket
  
  
  • Udonthani, Udonthani Province, sister city to Reno, Nevada