| Election Name: | 1978 Islington London Borough Council election |
| Country: | London |
| Type: | parliamentary |
| Previous Year: | 1974 |
| Previous Election: | 1974 Islington London Borough Council election |
| Next Election: | 1982 Islington London Borough Council election |
| Next Year: | 1982 |
| Seats For Election: | All 52 council seats up for election |
| Majority Seats: | 27 |
| Registered: | 117,884 |
| Turnout: | 38.7% |
| Council control | |
| Before Election: | Labour |
| Posttitle: | Council control after election |
| After Election: | Labour |
| Party3: | Labour and Co-operative Party |
| Seats Before1: | 52 |
| Seats After1: | 48 |
| Seat Change1: | 12 |
| Popular Vote1: | 54,262 |
| Percentage1: | 49.62% |
| Popular Vote2: | 42,014 |
| Percentage2: | 38.42% |
| Popular Vote3: | 1,804 |
| Percentage3: | 1.65% |
| Popular Vote4: | 6,149 |
| Percentage4: | 5.62% |
| Seats After2: | 2 |
| Seat Change2: | 2 |
| Seats After3: | 2 |
| Seat Change3: | 2 |
| Last Election3: | 0 seats, |
| Last Election2: | 0 seats, |
| Seats Before2: | 0 |
| Last Election1: | 60 seats, |
| Seats After4: | 0 |
| Seats Before4: | 0 |
| Last Election4: | 0 seats |
The 1978 Islington Council election took place on 4 May 1978 to elect members of Islington London Borough Council in London, England. The whole council was up for election and the Labour Party stayed in overall control of the council.
Since the last election, the council had changed the boundaries of their wards as such: Changes to wards from 1974 to 1978
| Ward | 1974 election | 1978 election | |
|---|---|---|---|
| Bunhill | 2 seats | 3 seats | |
| Canonbury | 4 seats | Ward divided | |
| Canonbury East | Part of Canonbury Ward | 2 seats | |
| Canonbury West | Part of Canonbury Ward | 2 seats | |
| Gillespie | Didn't exist | 2 seats | |
| Highbury | 4 seats | 3 seats | |
| Highview | 3 seats | 2 seats | |
| Holloway | 4 seats | 3 seats | |
| Junction | 4 seats | 3 seats | |
| Mildmay | 4 seats | 3 seats | |
| Parkway | 3 seats | Ward abolished | |
| Pentonville | 3 seats | Ward abolished | |
| Quadrant | 4 seats | 2 seats | |
| Station | 2 seats | Ward Abolished | |
| Sussex | Didn't exist | 2 seats | |
| Tollington | Didn't exist | 3 seats |
(*) - Represents an incumbent candidate
(‡) - Represents an incumbent from a ward that was split into two separate wards