A Generation is a 1955 Polish film directed by Andrzej Wajda. It is based on the novel Pokolenie by Bohdan Czeszko, who also wrote the script. It was Wajda's first film and the opening installment of what became his Three War Films trilogy set in the Second World War, to be followed by Kanał and Ashes and Diamonds.

Andrzej Witold Wajda was a Polish film and theatre director. Recipient of an Honorary Oscar, the Palme d'Or, as well as Honorary Golden Lion and Honorary Golden Bear Awards, he was a prominent member of the "Polish Film School". He was known especially for his trilogy of war films consisting of A Generation (1955), Kanał (1957) and Ashes and Diamonds (1958).