The slaughterhouses are:
- Lakseslakteri H 111 Viking Fjord AS
- SF 371 Slakteriet Brekke AS
They have been temporarily suspended by the Russian veterinary authorities, said the Norwegian Food Safety Authority (NFSA).
The reason lies in the findings of a high number of unwanted bacteria.
NFSA is verifying the claims.
The restrictions came into force on Aug. 5 and are temporary.
Thirty-two other Norwegian companies are licensed to import farmed salmon into Russia.