Wisden Cricketers' Almanack (often referred to simply as Wisden or colloquially as "the Bible of Cricket") is by far the best known reference book concerned with the sport of cricket, and is one of the most famous sports reference books published in the United Kingdom.

It was founded in 1864 by the English cricketer John Wisden (1826-1884) as a competitor to Fred Lillywhite's The Guide to Cricketers. Its annual publication has continued uninterrupted to the present day, making it the longest running sports annual in history. The sixth edition was the first published under its current title; the first five were published as The Cricketer ' s Almanack, with the apostrophe before the "s".

It has had only 15 editors in over 140 years, including Sydney Pardon for 35 editions (1891 to 1925), and Norman Preston for 29 editions (1952 to 1980). Matthew Engel is currently the editor. Scyld Berry is to edit the 2008 edition while Engel takes a sabbatical.

Wisden is a small-paged but very thick book (over 1,500 pages in modern editions) with a distinctive bright yellow cover that it has carried since the 75th edition in 1938 - in previous years, covers varied between yellow, buff and salmon pink. The 75th edition was the first to display the famous woodcut of two Victorian cricketers, by Eric Ravilious, on its cover. It is published each year in April, just before the start of the English domestic cricket season. The woodcut has been replaced by a photograph of a current cricketer in recent editions, starting with Michael Vaughan in 2003.

Collecting old Wisdens is a popular activity among cricket followers, and early editions command high prices. The first edition, only 112 pages long, sold for 1 shilling, but copies in good condition can sell for over £20,000. The editions published during the two World Wars are also very rare, as a result of wartime paper restrictions. In recent times, facsimiles of many of the early editions have been published.

In 2006 and 2007, a larger format edition has been published on an experimental basis. This is said to be in response to requests from readers who find the print size of the standard edition hard to read. It is around twice the traditional size and was published in a limited edition of 5,000. It is not a large print book as such, as the print will still be of a size found in many standard books.

Wisden was acquired and published by Robert Maxwell's publishing conglomerate, Macdonald, in the 1970s. Sir Paul Getty bought the company, John Wisden & Co, in 1993. The company presented the Wisden Trophy, for Test matches between England and West Indies in 1963, to celebrate its 100th edition.