| Election Name: | 2004 Dún Laoghaire–Rathdown County Council election |
| Country: | Ireland |
| Type: | Parliamentary |
| Ongoing: | no |
| Party Colour: | yes |
| Previous Election: | 1999 Dún Laoghaire–Rathdown County Council election |
| Previous Year: | 1999 |
| Next Election: | 2009 Dún Laoghaire–Rathdown County Council election |
| Next Year: | 2009 |
| Seats For Election: | All 28 seats on Dún Laoghaire–Rathdown County Council |
| Election Date: | 11 June 2004 |
| Party1: | Fine Gael |
| Seats1: | 9 |
| Seat Change1: | +1 |
| Party2: | Fianna Fáil |
| Seats2: | 7 |
| Seat Change2: | -3 |
| Party3: | Labour Party (Ireland) |
| Seats3: | 6 |
| Seat Change3: | - |
| Party4: | Green Party (Ireland) |
| Seats4: | 4 |
| Seat Change4: | +3 |
| Party5: | Progressive Democrats |
| Seats5: | 1 |
| Seat Change5: | -2 |
| Party6: | Independent (politician) |
| Seats6: | 1 |
| Seat Change6: | +1 |
| Map Size: | 300px |
| Council control | |
| Posttitle: | Council control after election |
An election to Dún Laoghaire–Rathdown County Council took place on 11 June 2004 as part of that year's Irish local elections. 28 councillors were elected from six local electoral areas (LEAs) for a five-year term of office on the electoral system of proportional representation by means of the single transferable vote (PR-STV).
| Party | valign=top | Seats | valign=top | ± | valign=top | First Pref. votes | valign=top | FPv% | valign=top | ±% |
|---|---|---|---|---|---|---|---|---|---|---|
| 9 | +1 | 19,613 | 24.06 | |||||||
| 7 | align=right | -3 | 20,267 | 24.86 | ||||||
| 6 | align=right | - | 16,549 | 20.30 | ||||||
| 4 | +3 | 8,432 | 10.34 | |||||||
| 1 | align=right | -2 | 6,851 | 8.40 | ||||||
| 1 | +1 | 3,621 | 4.44 | |||||||
| Totals | align=right | 28 | align=center | - | align=right | 81,517 | 100.00 | — |