Adalberto Maria Merli is an Italian television and film actor. He has appeared in 27 films since 1965.
Born in Rome, Merli 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. Merli is also active as a voice actor.