Got Milk? (stylized as got milk?) was an American advertising campaign encouraging the consumption of cow's milk, which was created by the advertising agency Goodby Silverstein & Partners for the California Milk Processor Board in 1993 and later licensed for use by milk processors and dairy farmers. It ran from October 24, 1993, to February 24, 2014.

 
 

The phrase was created by the advertising agency Goodby Silverstein & Partners. In an interview in Art & Copy, a 2009 documentary that focused on the origins of famous advertising slogans, Jeff Goodby and Rich Silverstein said that the phrase almost didn't turn into an advertising campaign. According to the New York Times, people at Goodby Silverstein "thought it was lazy, not to mention grammatically incorrect".

The ads would typically feature people in various situations involving dry or sticky foods and treats such as cookies. The person then would find himself in an uncomfortable situation due to a full mouth and no milk to wash it down. At the end of the commercial the character would look sadly to the camera and boldly displayed would be the words, "Got Milk?"

The first Got Milk? ad ran on October 29, 1993, and featured a hapless history buff (played by Sean Whalen) receiving a call to answer a radio station's $10,000 trivia question (voiced by Rob Paulsen), "Who shot Alexander Hamilton in that famous duel?" (referring to the Burr–Hamilton duel). The man's apartment is shown to be a private museum to the duel, packed with artifacts. He answers the question correctly, saying "Aaron Burr", but because his mouth is full of peanut butter and he has no milk to wash it down, his answer is unintelligible. The ad, directed by future Hollywood director Michael Bay, was at the top of the advertising industry's award circuit in 1994.

From 1994-1995, fluid milk sales in the 12 regions totaled 23.3 billion pounds, and increased advertising expenditures amounted to $37.9 million. In 2002, the ad was named one of the ten best commercials of all time by a USA Today poll, and was run again nationwide that same year. It has since been featured in numerous books on advertising and is being used in case studies at top-flight programs around the country.

According to the Got Milk website, the campaign has over 90% awareness in the US and the tag line has been licensed to dairy boards across the US since 1995. Got Milk is a powerful property and has been licensed on a range of consumer goods including Barbie dolls, Hot Wheels, baby and teen apparel, and kitchenware. The trademarked line has been widely parodied by groups championing a variety of causes. Many of these parodies use a lookalike rather than the actual persons used in the original Got Milk adverts.

The voice saying "Got Milk?" at the end of each television ad is that of veteran voiceover actor Denny Delk.