| Official Name: | Marikostinovo |
| Settlement Type: | Village |
| Pushpin Map: | Bulgaria |
| Pushpin Label Position: | Location in Bulgaria |
| Subdivision Name: |  Bulgaria |
| Subdivision Type1: | Province |
| Subdivision Name1: | Blagoevgrad Province |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Petrich Municipality |
| Population As Of: | 2007 |
| Timezone: | EET |
| Utc Offset: | +2 |
| Timezone Dst: | EEST |
| Utc Offset Dst: | +3 |
| Coordinates: | 41.4333°N 44°W |
Marikostinovo is a village in Petrich Municipality, in Blagoevgrad Province, Bulgaria.[1]