"Oide Shampoo" is the second single by Japanese girl group Nogizaka46, released on May 2, 2012. It reached number one in the Oricon Weekly Chart. It sold 156,000 copies. It reached number two on the Billboard Japan Hot 100.

Nogizaka46 is a Japanese female idol group produced by Yasushi Akimoto, created as the official rival of the group AKB48. They are the first group from the Sakamichi Series, which also includes sister groups Sakurazaka46, Yoshimotozaka46, and Hinatazaka46.