What actors and actresses appeared in The Pianist - 1991?

There is no film called "The Pianist" released in 1991. The movie you are likely thinking of is "The Pianist" (2002), directed by Roman Polanski.

The main actors in "The Pianist" (2002) are:

* Adrien Brody as Władysław Szpilman

* Thomas Kretschmann as SS Officer (Hauptsturmführer) Wilm Hosenfeld

* Frank Finlay as Władysław's father, Samuel Szpilman

* Emilia Fox as Dorota

* Ed Stoppard as Jurek

* Maureen Lipman as Władysław's mother, Anna Szpilman

* Jacek Koman as Władysław's brother, Henryk Szpilman

* Daniel Caltagirone as Władysław's friend, Aleksander

Please note that there were several other actors in the film, but these are the most prominent.