Guilherme Berenguer (born September 20 1980 in Recife, Pernambuco) is a Brazilian TV actor, best know for his roles in Malhação (2004) as Gustavo and Bang-Bang (2005) as Neon.

He's one of the biggest teen idols thanks to his role in Malhação. He starred in the most popular and highest-rated season of the teen soap in 2004.

Guilherme Berenguer was born in Recife. Before being an actor he was an English teacher in São Paulo, and he was a model too, so he had one opportunity in Japan where he lived for 2 months working in campaigns. He went to Rio de Janeiro and made a lot of tests to play Gustavo in Malhação, when he got the character he became an idol for the girls.