Lilacs in the Spring is a 1954 British musical film directed by Herbert Wilcox and starring Anna Neagle, Errol Flynn and David Farrar. The film was made at Elstree Studios with sets designed by the art director William C. Andrews. Shot in Trucolor it was distributed in Britain by Republic Pictures. It was the first of two films Neagle and Flynn made together, the other being King's Rhapsody. It was released in the United States as Let's Make Up.

The script was based on the stage musical The Glorious Days written by Harold Purcell and Robert Nesbitt, which had been a big success for Neagle, running for two years and 467 performances. It referenced several earlier hits of Neagle, including Nell Gwynn (1934) and Victoria the Great (1937).