The court "found the defendant guilty" of smuggling and possessing "a significant amount of narcotics", judge Anna Sotnikova told a court in the town of Khimki just outside Moscow.
Sotnikova sentenced Griner, 31, to nine years in prison and said she would also have to pay a fine of one million rubles ($16,590).
US President Joe Biden immediately released a statement, calling the Russian court's sentencing of Griner "unacceptable." "Russia is wrongfully detaining Brittney.
It's unacceptable and I call on Russia to release her immediately so she can be with her wife, loved ones, friends and teammates," Biden said in the statement.
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