Eureka is a journal published annually by The Archimedeans, the mathematical society of Cambridge University. It includes mathematical articles on a variety of different topics - written by students and mathematicians from all over the world - as well as a short summary of the activities of the society, problems and puzzles, artwork and book reviews.

Eureka has been published 65 times since 1939, and authors include luminaries such as Nobel Laureate Paul Dirac, Fields Medallist Timothy Gowers, as well as Paul Erdos, Godfrey Hardy, John Conway, Martin Gardner, Roger Penrose, Ian Stewart, Stephen Hawking and many more.