大島優子
is a 2009 Japanese supernatural horror film directed by Kōji Shiraishi, written by Takeki Akimoto, and based on the Japanese urban legend known as "Teke Teke". It stars Yuko Oshima, Mami Yamasaki, and Mai Nishida, and was followed by a sequel, "Teketeke 2", which was released the same year.