Checkmate! is a collaboration album by Japanese singer Namie Amuro, featuring a collection of her collaborations with other musicians released between 2003 and 2011, as well as four new collaborations. The album was released on April 27, 2011, about one month after its original release date, due to 2011 Tōhoku earthquake and tsunami.

Namie Amuro is a retired Japanese singer. She rose to prominence as a teen idol, and transitioned into a leading pop artist due to her versatility across music styles and visual presentation. Due to her career reinventions and longevity, she is known as an icon across Japan and Asia. She has been referred to as the "Queen of Japanese Pop", and her influence domestically has drawn equivalent comparisons to artists such as Janet Jackson and Madonna in Western pop culture.