Yoshikazu Mera is a singer. Japanese countertenor. His range is three and a half octaves. He well known who singing the theme of the movie "Princess Mononoke". He appears frequently as a soloist with the Bach Collegium Japan, which under its conductor Masaaki Suzuki performs Baroque music. His 1998 recital disc "Nightingale" on Sweden's BIS Records was a major success in Japan.

It was revealed in a television documentary entitled "米良美一の實話" ("Yoshikazu Mela's true story") that he was born with congenital osteogenesis imperfecta.