Fabrizio Comencini (Garda, 6 November 1953) is an Italian Venetist politician.
A former member of the Italian Social Movement (for which he was elected member of the Veneto Regional Council in 1985 and 1990), he then switched to the Liga Veneta–Lega Nord. Re-elected for this party in the Regional Council, he was national secretary of Liga Veneta from 1995 to 1998. During his leadership, the Lega Nord had its best electoral result in Veneto, scoring 29.7% of the votes, even more than in Lombardy.