45°4′8″N 73°20′31″W / 45.06889°N 73.34194°W
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| Established | ~1781 |
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| Location | Lacolle, Quebec |
| Website | Official homepage |
| Designated | 1923 |
| Part of | Battle of Lacolle Mills (1812) Battle of Lacolle Mills (1814) |
| Designated | 1960 |
Lacolle Mills Blockhouse (French: Blockhaus de la Rivière-Lacolle) is a blockhouse and museum located alongside the Lacolle River near the village of Lacolle, Quebec.