The newly opened metro station Park Pobedy in Moscow is 90 meters beneath the surface.

Hi there,
the deepest metro station in the world is the 'Arsenalnaya' station in Kiev's underground network, opened in 1960. Its depth is 102 m (330 ft) under the street level. The second deepest metro station should be the 'Park pobedy' station in Moscow, opened 2003 and lying 86 m (278 ft) under the surface.
Best regards,
Jan P., Prague