1983 General Election - Ynys Môn
| Year | 1983 |
| General election | 1983 General Election |
| Constituency | Ynys Môn |
| Turnout | 79.6% |
Results
| Candidate | Party | Votes |
| Best, Keith | Conservative | 15,017 |
| Jones, Ieuan | Plaid Cymru | 13,333 |
| Williams, Tudor | Labour | 6,791 |
| Thomas, David | Social Democratic | 4,947 |