As Time Goes By is a British romantic sitcom that aired on BBC One from 12 January 1992 to 30 December 2005, running for nine series and two specials. Starring Judi Dench and Geoffrey Palmer, it follows the relationship between two former lovers who meet unexpectedly after losing contact for 38 years.

The series originated as an idea by Colin Bostock-Smith. It was produced and directed by Sydney Lotterby and was written by Bob Larbey, who had co-written both The Good Life and Ever Decreasing Circles with John Esmonde. In 2004, As Time Goes By was ranked No. 29 in Britain's Best Sitcom. The programme's original working title had been Winter with Flowers but was changed during its first day of filming because of the cast's protests. The new title was taken from the 1931 Herman Hupfeld song "As Time Goes By", and the recorded version by Joe Fagin was used as the title music.

The series was produced by Theatre of Comedy Entertainment in association with DLT Entertainment Ltd. for the BBC.

Dench's real-life daughter Finty Williams appeared in the title sequence as the young Jean in one of the two pictures. The other was Palmer's son, Charles Palmer, as the young Lionel.