| Official Name: | Graafstroom |
| Flag Size: | 120x100px |
| Mapsize: | 250px |
| Subdivision Type: | Country |
| Subdivision Name: | Netherlands |
| Subdivision Type1: | Province |
| Subdivision Name1: | South Holland |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Molenlanden |
| Area Footnotes: | (2006) |
| Area Total Km2: | 69.32 |
| Area Land Km2: | 67.11 |
| Area Water Km2: | 2.21 |
| Population As Of: | 1 January 2007 |
| Population Note: | Source: CBS, Statline. |
| Settlement Type: | Former municipality |
| Population Total: | 9,757 |
| Population Density Km2: | 145 |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Coordinates: | 51.88°N 4.8°W |
| Website: | www.graafstroom.nl |
Graafstroom (in Dutch; Flemish pronounced as /ɣraːfˈstroːm/) is a former municipality in the western Netherlands, in the province of South Holland, and the region of Alblasserwaard. The former municipality had a population of 9,697 in 2004, and covered an area of 69.32km2 of which 2.21km2 was water. Since 2013 Graafstroom has been a part of the new municipality of Molenwaard (which ceased to exist in 2019).
The former municipality of Graafstroom consisted of the following population centres: Bleskensgraaf en Hofwegen, Brandwijk, Goudriaan, Molenaarsgraaf, Ottoland, Oud-Alblas, and Wijngaarden.