X -Cross- (simply read as "Cross") is the 57th studio album released by Japanese kayōkyoku singer Sayuri Ishikawa, celebrating her 40th anniversary in the music industry. She collaborated with Shigeru Kishida of Quruli, Kazufumi Miyazawa of The Boom, Tamio Okuda, Michiru, Hako Yamasaki, Neko Saito, and Hiroko Taniyama to write the tracks on the album.