Let's All Go to the Lobby (officially known as Technicolor Refreshment Trailer No. 1) is an American animated musical advertisement that was produced in the mid-1950s for Filmack Studios. It was played in theaters before the beginning of the main film or before intermission, and features animated food items urging the audience to buy snacks sold in the theater lobby. It was directed by Dave Fleischer with lyrics by Jack Tillar.

Filmack has continued selling copies of Let's All Go to the Lobby in the decades since its production and estimates that 80% of independent domestic theaters have screened the advertisement. The film historian Daniel Eagan wrote that it is likely the most-viewed snipe and that it was ubiquitous to the American theater-going experience of the 1960s. The well-known scene of the animated concessions has frequently been parodied in popular culture. In 2000, Let's All Go to the Lobby was selected for preservation in the US National Film Registry by the Library of Congress as being "culturally, historically, or aesthetically significant".