The Tretya Rechka (Russian: Третья речка, literal translation: "third river") is a stream in the Beringovsky District of Chukotka Autonomous Okrug, Russia.

[1] It drains part of the southern Anadyr Lowlands (very flat with wetlands and tundra).

It flows northeast and then northwest into the Anadyr Estuary[2] (its mouth is the southernmost notch on the image on that page).

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