The 1999 Horsham District Council election took place on 6 May 1999 to elect members of Horsham District Council in England.[1] It was held on the same day as other local elections. The Conservatives won a majority of 3 on the council, gaining from the Liberal Democrats.
| Election Name: | 1999 Horsham District Council election |
| Country: | England |
| Type: | Parliamentary |
| Ongoing: | no |
| Party Colour: | yes |
| Previous Election: | 1995 Horsham District Council election |
| Previous Year: | 1995 |
| Next Election: | 2003 Horsham District Council election |
| Next Year: | 2003 |
| Seats For Election: | All 36 seats to Horsham District Council |
| Majority Seats: | 19 |
| Election Date: | 6 May 1999 |
| Party1: | Conservative Party (UK) |
| Seats1: | 21 |
| Seat Change1: | 4 |
| Party2: | Liberal Democrats (UK) |
| Seats2: | 12 |
| Seat Change2: | 12 |
| Party3: | Independent politician |
| Seats3: | 3 |
| Seat Change3: | 1 |
Prior to the election, the composition of the council was:
| 24 | 17 | 2 | |
| LDem | Con | Ind |
After the election, the composition of the council was:
| 21 | 12 | 3 | |
| Con | LDem | Ind |
Brain J. Ms. was elected in Storrington as a Liberal Democrat in 1995, when this seat was last contested.