| Election Name: | 2020 Maryland Republican presidential primary |
| Candidate1: | Donald Trump |
| Image1: | File:Donald Trump official portrait (cropped).jpg |
| Color2: | 00A9E0 |
| Color1: | 283681 |
| Home State2: | Massachusetts |
| Home State1: | Florida |
| Candidate2: | Bill Weld (withdrawn) |
| Country: | Maryland |
| Type: | presidential |
| Percentage2: | 13.08% |
| Percentage1: | 86.92% |
| Popular Vote2: | 44,501 |
| Popular Vote1: | 295,787 |
| Delegate Count1: | 38 |
| Delegate Count2: | 0 |
| Ongoing: | No |
| Election Date: | June 2, 2020 |
| Elected Members: | MT |
| Outgoing Members: | IN |
| Votes For Election: | 38 pledged delegates to the Republican National Convention |
| Next Election: | 2024 Maryland Republican presidential primary |
| Previous Election: | 2016 Maryland Republican presidential primary |
| Next Year: | 2024 |
| Previous Year: | 2016 |
| Map Size: | 300px |
The 2020 Maryland Republican presidential primary was held on June 2, 2020 along with seven other state nominating contests in the Republican Party presidential primaries for the 2020 presidential election. Donald Trump won the primary and all of the state's 38 delegates. Bill Weld, despite having ended his presidential campaign in March, received his highest share of the popular vote in this primary.
| Candidate | Vote[1] | Delegates[2] | ||
|---|---|---|---|---|
| % | ||||
| Donald Trump | 295,787 | 86.92 | 38 | |
| Bill Weld (withdrawn) | 44,501 | 13.08 | 0 | |
| Total valid votes | 340,288 | 100% | 38 | |