The 1999 Ryedale District Council election to the Ryedale District Council was held on 6 May 1999. The whole council was up for election and the council stayed under no overall control.
| Party | Seats | Gains | Losses | Net gain/loss | Seats % | Votes % | Votes | +/− | |
|---|---|---|---|---|---|---|---|---|---|
| Conservative | 11 | +6 | 47.8 | ||||||
| Independent | 6 | -3 | 26.1 | ||||||
| Liberal Democrats | 5 | -3 | 21.7 | ||||||
| Labour | 1 | 0 | 4.3 | ||||||
