"Shitsuren, Arigatō" (失恋、ありがとう, "Thank you, for Heartbreak") is the 57th single by Japanese idol group AKB48.

It was released in Japan by King Records on March 18, 2020, in four versions.

[1] It debuted at number one on the Oricon Singles Chart and Billboard Japan Hot 100, with over 1.4 million copies sold in its first week, making them the first girl group to surpass one million copies in its first week that year.

[2] The center for the main track is Mizuki Yamauchi.

"Shitsuren, Arigatō" is the 44th consecutive single by AKB48 to debut at number one.