Roscommon County Council: 1979 Local Election
| Party | Seats | Votes | Share | Candidates | Constituencies | |||||
| Fianna Fáil |  | 12 | (-2) | 13444 | 47.6% | (+8.4%) | 18 | (-6) | 4 | (-1) |
| Fine Gael |  | 12 | (-5) | 11853 | 42.0% | (-1.8%) | 19 | (-6) | 4 | (-1) |
| Independent |  | 1 | (-2) | 1748 | 6.2% | (-4.0%) | 5 | (-3) | 3 | (-2) |
| Sinn Féin |  | 1 | (+1) | 926 | 3.3% | (-1.8%) | 2 | (-1) | 2 | (-1) |
| Labour Party |  | 0 | (-1) | 269 | 1.0% | (-0.8%) | 2 | (-1) | 1 | (-2) |