The 2019 Horsham District Council election took place on 2 May 2019 to elect members of Horsham District Council in England. It was held on the same day as other local elections. Every seat was contested and the Conservatives retained control of the council with a majority of 8.
Prior to the election, the composition of the council was:
After the election, the composition of the council was:
|-
A by-election was called in Trafalgar ward due to the retirement of Leonard Crosbie on 3 September 2020. The Horsham & Crawley Liberal Democrats confirmed his death on 11 September 2020.
A by-election was called in Forest ward due to the retirement of Godfrey Newman on 11 August 2021. The by-election was held on Thursday 21 October and the seat retained by the Liberal Democrats
Following the death of Councillor Roy Cornell, by-election was held on Thursday 16 December. This seat was gained by the Liberal Democrats from the Conservatives.
Following the resignation of Cllr Frances Haigh, a by-election will be held for the vacant seat of Denne in Horsham town. The election was held on Thursday 24 March 2022. Cllr Haigh was leader of the opposition Liberal Democrats until August 2021. The seat was held by Clive Trott of the Liberal Democrats.
Following the resignation of Cllr Jim Sanson, (Conservative) a by-election was held on 7 April 2022 for the vacant seat of Storrington & Washington. the election was won by the Green Party in a traditionally safe Conservative seat.