The Big Impression, known as Alistair McGowan's Big Impression for the first three series, is a British comedy sketch show. It features Alistair McGowan and Ronni Ancona impersonating personalities from entertainment and sport. Four series and a number of specials were made by Vera Productions and it was first broadcast on BBC One between 2000 and 2004.

The series has won five awards, including the 2003 BAFTA comedy programme prize.