Masahiro Andoh (安藤 正容, Andō Masahiro, born September 16, 1954) is a Japanese composer, guitarist and T-Square's leader from Chikusa-ku, Nagoya, Aichi Prefecture, Japan. He was also one-third of Ottottrio, a supergroup led by three Japanese guitarists: himself, Hirokuni Korekata of KORENOS and Issei Noro of Casiopea.
Andoh was also commissioned to create the music for Arc the Lad: Twilight of the Spirits and Gran Turismo. He is one of the performers for the band's composition, "Truth", the theme tune for Fuji Television's Formula One World Championship coverage (which has been in use since 1987) and the F-1 Grand Prix video game series.
On February 1, 2021, Andoh announced that he would leave T-Square following the release of their next album and tour.