| Election Name: | 2008 Ohio Republican presidential primary |
| Country: | Ohio |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 2004 Ohio Republican presidential primary |
| Previous Year: | 2004 |
| Next Election: | 2012 Ohio Republican presidential primary |
| Next Year: | 2012 |
| Candidate1: | John McCain |
| Home State1: | Arizona |
| Delegate Count1: | 85 |
| Popular Vote1: | 656,687 |
| Percentage1: | 59.92% |
| Outgoing Members: | WI |
| Elected Members: | RI |
| Candidate2: | Mike Huckabee |
| Home State2: | Arkansas |
| Delegate Count2: | 0 |
| Popular Vote2: | 335,356 |
| Percentage2: | 30.60% |
| Color1: | ce5c17 |
| Color2: | 990000 |
The 2008 Ohio Republican presidential primary took place on March 4, 2008. That night, candidate John McCain secured enough delegate votes to win the Republican nomination for the 2008 United States presidential election.
McCain won every county in the state.
| Candidate | Votes (District Level/At Large)[1] [2] | Percentage | Delegates | |
|---|---|---|---|---|
| 570,453/656,687 | 54.56/59.92% | 85 | ||
| 338,838/335,356 | 32.41/30.60% | 0 | ||
| 55,690/50,964 | 5.33/4.65% | 0 | ||
| Mitt Romney | 54,540/36,031 | 5.22/3.39% | 0 | |
| Fred Thompson | 26,103/16,879 | 2.50/1.54% | 0 | |
| Total | 1,045,624/1,095,917 | 100/100% | 85 |
* Candidate had dropped out of the race before March 4.
3 other unpledged delegates will also be sent to the Republican convention to bring Ohio's total delegate count to 88.