Cezary Maciej Ostrowski (born 30 September 1962) is a Polish composer, musician, songwriter, author, visual artist and journalist.

He is best known for his work as a leader of the critically acclaimed new wave band Bexa Lala, established in 1983.

Before that, he had fronted the groups: Taz and Leo Patett in the early 1980s, bands renowned for their rough, and violent sound influenced by free jazz, electronica, and post-punk.

In 2001, he formed the jazz duo Trzaska & Ostrowski that released the album Blades.

Cezary Ostrowski has also played with Mikolaj Trzaska, Olga Jackowska, Marcin Swietlicki, Malgorzata Ostrowska, Piotr Bikont.