Adalberto Maria Merli (born 14 January 1938) is an Italian actor and voice actor.

Born in Rome, Merli is active on film and television and he has appeared in over 27 films since 1965. He had his breakout role in the 1968 RAI television series La freccia nera. After some further television success through the TV series Le terre di Sacramento and E le stelle stanno a guardare Merli made his film debut in the 1971 Miklós Jancsó's drama film La tecnica e il rito, then he became quite active in films of "poliziottesco" or political genre, often in leading roles.