Ko Chang may refer to:

• Ko Chang District, in Trat Province, Thailand's third largest island
• Ko Chang, Mae Sai, a subdistrict in Chiang Rai Province, Thailand
• Ko Chang (Ranong), a small island in Ranong Province, Thailand

• Geochang County, also known as Kochang, a county in South Gyeongsang, South Korea
• USS Mockingbird (AMS-27), also known as ROKS Ko Chang (MSC-521), a YMS-1-class minesweeper of the United States Navy

This disambiguation page lists articles about distinct geographical locations with the same name.
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