Nitrate reductases are enzymes that reduce nitrate to nitrite.

Nitrate reductase may also refer to:

Nitrate reductase (cytochrome) Nitrate reductase (NADH) Nitrate reductase (NADPH) Nitrate reductase (NAD(P)H) Nitrate reductase (quinone)

See also Nitrite reductase (disambiguation)