A pork pie hat (a.k.a. porkpie) is a type of hat made of felt or straw. It is a type of fedora which has a cylindrical crown and flat top. This style of crown is called a "telescopic crown", but the hat overall resembles the boater hat. It is short (usually 3" to 4" in height) and has an indentation all the way around its top, allowing it to pop upward slightly when worn. Furthermore, as stated in a newspaper clipping from the mid-1930's: "The true pork pie hat is so made that it cannot be worn successfully except when telescoped." The same clipping refers to the hat also as "the bi crowned" [sic].

The pork pie hat originated in the mid-19th century. The porkpie is named for its resemblance to the pork pie dish. According to the American fashion reporting of the 1930's, the smooth dark brown felt was the original popular model, but the "fuzzier" green model came in close second.

The pork pie hat was a staple of the British man-about-town style for many years. It was commonly worn by American Civil War soldiers and the US Army (unofficially) throughout the 1880s. Pork pie hats are often associated with jazz, blues and ska musicians and fans. Charles Mingus wrote an elegy for jazz saxophone great Lester Young called "Goodbye Pork Pie Hat", since Young was noted for his ever-present broad-brimmed porkpie.

Goodbye Pork Pie is a 1981 New Zealand film directed by Geoff Murphy and written by Geoff Murphy and Ian Mune. The film is considered^{[by whom?]} to be one of New Zealand's most popular films, and has been described as Easy Rider meets the Keystone Kops.

It was filmed during November 1979, and during filming, utilized only 24 cast and crew. Its overheads were surprisingly minimal, to the point that the Holden Police cars used doubled as crew and towing vehicles, and that the director Geoff Murphy, performed some of the stunts himself.

In the Northland town of Kaitaia in Spring 1978, nineteen-year-old Gerry Austin (Kelly Johnson) opportunistically steals a wallet accidentally dropped by a wealthy woman named Lesley Morris. Finding cash and her driver's licence inside it, he uses them to rent a yellow Mini. With no particular aim in mind, he drifts down to Auckland. Meanwhile in Auckland, the middle-aged John (Tony Barry), has just had Sue, his girlfriend of six years, walk out on him and return home to Invercargill. After a night on the bottle, John decides to go down to Invercargill.