"Es (Theme of Es)" (officially written ãÂÂesãÂÂ~Theme of es~) is the eighth single released by Mr. Children on May 10, 1995. It debuted at No. 1 on the Japanese Oricon weekly single charts.
Along with their next single "See-Saw Game (Yà «kan na Koi no Uta)," "Es (Theme of Es)" was certified as a million-selling single of 1995 by the Recording Industry Association of Japan.