| Plavecký Mikuláš | |
| Other Name: | Detrekőszentmiklós |
| Settlement Type: | Municipality |
| Subdivision Type: | Country |
| Subdivision Type1: | Region |
| Subdivision Type2: | District |
| Subdivision Name2: | Malacky District |
| Pushpin Map: | Slovakia Bratislava Region#Slovakia |
| Pushpin Relief: | 1 |
| Pushpin Map Caption: | Location of Plavecký Mikuláš in the Bratislava Region##Location of Plavecký Mikuláš in Slovakia |
| Coordinates: | 48.51°N 17.3°W |
| Leader Title: | Mayor |
| Leader Name: | Emília Balúchová |
| Leader Party: | Independent |
| Established Title: | First mentioned |
| Established Date: | 1394 |
| Area Footnotes: | [1] |
| Area Total Km2: | 26.73 |
| Elevation Footnotes: | [2] |
| Elevation M: | 253 |
| Population Footnotes: | [3] |
| Population Total: | 734 |
| Timezone1: | CET |
| Utc Offset1: | +1 |
| Timezone1 Dst: | CEST |
| Utc Offset1 Dst: | +2 |
| Postal Code Type: | Postal code |
| Postal Code: | 906 35 |
| Area Code: | +421 34 |
| Blank Name: | Car plate |
| Blank Info: | MA |
Plavecký Mikuláš (in Slovak ˈplaʋetskiː ˈmikulaːʂ/; de|Blasenstein-Sankt-Nikolaus; hu|Detrekőszentmiklós) is a village and municipality in western Slovakia in Malacky District in the Bratislava region.