Luciano Vincenzoni (7 March 1926 – 22 September 2013) was an Italian screenwriter, known as the "script doctor". He wrote for 65 films between 1954 and 2000.

Vincenzoni was born in Treviso, Veneto. He is probably best known in world cinema for his scriptwriting of Sergio Leone's For a Few Dollars More (1965) and The Good, the Bad and the Ugly in 1966, but he also wrote for a number of other Spaghetti Westerns.