Trailer Park Boys: Countdown to Liquor Day (also known as simply Trailer Park Boys 2) is a 2009 Canadian mockumentary black comedy crime film directed by Mike Clattenburg, and based on the Canadian television series Trailer Park Boys. It is the second film in the Trailer Park Boys franchise, following Trailer Park Boys: The Movie (2006). Trailer Park Boys: Countdown to Liquor Day is a conclusion to "Say Goodnight to the Bad Guys", the television special that ended the series after its seventh season. The film follows the characters of Ricky (Robb Wells), Julian (John Paul Tremblay) and Bubbles (Mike Smith) as they return to a life of crime after being released from prison.

Trailer Park Boys: Countdown to Liquor Day premiered in Halifax, Nova Scotia at the 29th Atlantic Film Festival; it was released theatrically in Canada on September 25, 2009. It received mixed reviews; some critics praised it for staying faithful to the television series, while others derided it for its crude humor. Trailer Park Boys: Countdown to Liquor Day grossed over $3 million during its domestic theatrical run. It won an Atlantic Film Festival Award for Best Sound Design, and earned a Genie Award nomination for Best Performance by an Actor in a Supporting Role. Although it was intended to end the franchise, Trailer Park Boys: Countdown to Liquor Day was followed by a third and final film of the Trilogy, Trailer Park Boys: Don't Legalize It, which was released in Canada on April 18, 2014.