| Westknollendam | |
| Settlement Type: | Village |
| Native Name Lang: | nl |
| Pushpin Map: | Netherlands#Netherlands North Holland |
| Pushpin Label Position: | right |
| Pushpin Mapsize: | 250 |
| Pushpin Map Caption: | Location in the Netherlands##Location in the province of North Holland in the Netherlands |
| Subdivision Type: | Country |
| Subdivision Name: | Netherlands |
| Subdivision Type1: | Province |
| Subdivision Name1: | North Holland |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Zaanstad |
| Elevation Footnotes: | [1] |
| Elevation M: | -0.4 |
| Area Total Km2: | 0.35 |
| Population Footnotes: | [2] |
| Population Total: | 455 |
| Population As Of: | 2021 |
| Population Density Km2: | auto |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Postal Code Type: | Postal code |
| Postal Code: | 1525 |
| Area Code Type: | Dialing code |
| Area Code: | 075 |
Westknollendam is a village in the northwest Netherlands. It is located in the municipality of Zaanstad, North Holland, about 15 km northwest of Amsterdam. The village is located along the Zaan river. On the opposite shore is Oostknollendam, in the municipality of Wormerland.