| Election Name: | 2005 Marche regional election |
| Country: | Marche |
| Type: | legislative |
| Ongoing: | no |
| Previous Election: | 2000 Marche regional election |
| Previous Year: | 2000 |
| Next Election: | 2010 Marche regional election |
| Next Year: | 2010 |
| Election Date: | 3–4 April 2005 |
| Leader1: | Gian Mario Spacca |
| Party1: | The Daisy |
| Alliance1: | The Union |
| Color1: | EF3E3E |
| Seats1: | 24 |
| Seat Change1: | 1 |
| Popular Vote1: | 499,381 |
| Percentage1: | 57.8% |
| Swing1: | 7.9% |
| Leader2: | Francesco Massi |
| Party2: | Forza Italia |
| Alliance2: | House of Freedoms |
| Seats2: | 16 |
| Seat Change2: | 1 |
| Popular Vote2: | 333,181 |
| Percentage2: | 38.5% |
| Swing2: | 5.7% |
| President of Marche | |
| Posttitle: | President of Marche |
| Before Election: | Vito D'Ambrosio |
| Before Party: | Democrats of the Left |
| After Election: | Gian Mario Spacca |
| After Party: | The Daisy |
The Marche regional election of 2005 took place on 3–4 April 2005.
Gian Mario Spacca (The Daisy, then Democratic Party) defeated Francesco Massi (Union of Christian and Centre Democrats, at the time, now member of The People of Freedom) by a landslide.
| Candidates & parties | votes | votes (%) | seats reg. list | seats prov. lists | |
|---|---|---|---|---|---|
| Gian Mario Spacca | 499,381 | 57.76 | 4 | 20 | |
| The Olive Tree | 316,816 | 40.12 | → | 15 | |
| Communist Refoundation Party | 49,989 | 6.33 | → | 2 | |
| Party of Italian Communists | 31,316 | 3.97 | → | 1 | |
| Federation of the Greens | 25,666 | 3.25 | → | 1 | |
| UDEUR | 14,172 | 1.79 | → | 1 | |
| Italy of Values | 11,136 | 1.41 | → | 0 | |
| Civic Lists | 5,780 | 0.73 | → | 0 | |
| Francesco Massi | 333,181 | 38.54 | 1 | 15 | |
| Forza Italia | 142,058 | 17.99 | → | 8 | |
| National Alliance | 102,107 | 12.93 | → | 5 | |
| Union of Christian and Centre Democrats | 57,293 | 7.26 | → | 2 | |
| Lega Nord Marche | 6,866 | 0.87 | → | 0 | |
| Michele Tiraboschi | 19,778 | 2.29 | - | - | |
| Christian Democracy | 10,857 | 1.37 | → | 0 | |
| New PSI–PRI–PLI–PSDI–Others | 5,125 | 0.65 | → | 0 | |
| Vincenzo Rosini | 12,239 | 1.42 | - | - | |
| Social Alternative | 10,068 | 1.28 | → | 0 | |
| No Euro | 390 | 0.05 | → | 0 | |
| Total | 864,579 | 100.00 | 5 | 35 |