A crumpet is a cake made from flour or potato and yeast eaten mainly in the United Kingdom, but also in the nations of the Commonwealth. It is also known as a pikelet in the West Midlands.

The crumpet is circular in shape (usually; long and square varieties also exist) and has a distinctive flat top covered in small holes. It has a spongy texture and a fairly bland flavour.

Crumpets are served hot, usually with butter. Other popular accompaniments include jam, Marmite, honey, or cheese.

Mrs Beeton's Book of Household Management (pub. 1861) lists the following ingredients as being sufficient for 24 crumpets:

1 qt Water

2 oz Yeast

1/2 lb Potatoes

1/2 oz Salt

The crumpet should not be confused with the sweeter English muffin.

The name "crumpet" is thought to have originated from the Welsh crempog, a type of pancake.

In the UK, "crumpet" has become a slang term for a woman regarded as an object of sexual desire. Historically it has also been used as a non-sexual term of endearment.