"Mate" may refer to any of the following:

• Mate or yerba mate is a South American herb, as well as the popular caffeinated beverage prepared therefrom.
• Mahte is a term from Latvian mythology.
• Mating; see also Spouse
• "Mate" on a merchant vessel is the next ranking officer below the master (the ship's captain).
• Mate is a Britishism and Australianism for friend or pal: "My mate Bill"; also often used to address strangers: "Excuse me mate".
• In chess, mate is synonymous to checkmate.
• In sports, players on the same team are called team-mates.
• In politics, candidates for the same party are often referred to as running mates.