Judicael alias Berengar is Count of Rennes in the mid-to-late 10th century.

There are conflicting accounts of his parentage, one popular solution making him son and successor to a count Berenger (sometimes identified with Berengar of Rennes, sometimes with that man's supposed maternal grandson of the same name) by a daughter of Gurvand, Duke of Brittany.

However, an 11th-century collection of Angevin genealogies shows him to be son of Pascweten, son of Alan I, King of Brittany.