Ust-Kosa (Russian: Усть-Коса; Komi-Permyak: Усь Кӧсва, Uś Kösva) is a rural locality (a settlement) in Svetlichanskoye Rural Settlement, Kosinsky District, Perm Krai, Russia.

Ust-Kosa is located 99 km northeast of Kosa (the district's administrative centre) by road.

Novaya Svetlitsa is the nearest rural locality.

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