Elections to Lancaster City Council took place on 1 May 2003. The whole council was up for election and it remained in No Overall Control.
Following the election, the composition of the council was as follows:
|- style="background-color:#F6F6F6" | colspan="7" style="text-align: right; margin-right: 0.5em" | Turnout | style="text-align: right; margin-right: 0.5em" | 36 | style="text-align: right; margin-right: 0.5em" | 36,220 | style="text-align: right; margin-right: 0.5em" | |-