| Laxá í Kjós | |
| Name Etymology: | is|lax|lit=salmon |
| Pushpin Map: | Iceland |
| Pushpin Map Caption: | Location of the mouth of Laxá í Kjós |
| Subdivision Type1: | Country |
| Subdivision Name1: | Iceland |
| Subdivision Type2: | Region |
| Subdivision Name2: | Capital Region (Greater Reykjavík) |
| Subdivision Type3: | Constituency |
| Subdivision Name3: | Southwest |
| Subdivision Type4: | Municipality |
| Subdivision Name4: | Kjósarhreppur (Kjós) |
| Length: | 20km (10miles) |
| Source1: | lake |
| Source1 Coordinates: | 64.251°N -21.3449°W |
| Source1 Elevation: | 178m (584feet) |
| Mouth: | , Hvalfjörður |
| Mouth Coordinates: | 64.3423°N -21.6162°W |
| Basin Size: | 211sqkm |
| Tributaries Left: | Svínadalsá, Bugða |
Laxá í Kjós (pronounced as /is/; Laxá in Kjós) is a river in the Kjósarhreppur municipality of southwestern Iceland. It flows about from the pronounced as /is/, a small lake northwest of the Þingvallavatn, into the pronounced as /is/, a cove on the Hvalfjörður fjord.[1]
It is known for its salmon fishing, particularly where the salmon must traverse up several waterfalls. Brown trout and sea trout are also caught in the river.[2]
The first salmon hatchery in Iceland, established in 1884 by Danish scientist in the village of Reynivellir, was stocked with 31 spawning salmon captured in the Laxá í Kjós and its main tributary, the Bugða pronounced as /is/.[3] Other tributaries include the smaller Svínadalsá pronounced as /is/, Hálsá pronounced as /is/, and Þverá pronounced as /is/, all of which flow into the upper section of the river below the Þórufoss.
The Þórufoss pronounced as /is/ is an high waterfall, located about downstream from where Laxá í Kjós flows out of the Stíflisdalsvatn. A further downstream from the Þórufoss is the Pokafoss pronounced as /is/ a rapids-like small waterfall with a cascade. Both falls are accessible from the (Highway 48). Near where the river enters the Laxárvogur is another small waterfall, the Kvíslafoss pronounced as /is/.
The Þórufoss was the filming location for a scene in Game of Thrones ("The Laws of Gods and Men:" Season 4, Episode 6) where a dragon attacks a herd of Meereen goats.[4]