A teahouse or tearoom is an establishment which primarily serves tea and other light refreshments. A tea room may be a room set aside in a hotel, especially for serving afternoon tea, or may be an establishment that only serves cream teas. Although the function of a tearoom may vary according to the circumstance or country, teahouses often serve as centers of social interaction, like coffeehouses.

As well as referring to the drink itself, tea has long been used as an umbrella term for several different meals consisting of food accompanied by tea. English writer Isabella Beeton, whose books on home economics were widely read in the 19th century, describes meals of various kinds and provides menus for the "old-fashioned tea", the "at-home tea", the "family tea", and the "high tea".