Clamato was made by Mott's, the name is a combination of "clam" and "tomato". It is also referred to colloquially as "clamato juice". Clamato is used primarily as a mix for alcoholic beverages and it is popular for this in both Canada and Mexico, but curiously much less so in the United States (outside of Canadian-American and Mexican-American communities).

The Caesar (essentially a Bloody Mary with Clamato instead of tomato juice) is one of the top selling cocktails across Canada. Clamato is also added to beer in various beer cocktails (called Micheladas in Mexico). The most basic is known as a "beer 'n clam" in Western Canada, which is simply the addition of Clamato to pale lagers. In 2001 Anheuser-Busch and Cadbury-Schweppes introduced a premixed version called the "Budweiser and Clamato Chelada"