The Silver Shell for Best Actress (Spanish: Concha de Plata a la Mejor Interpretacion Femenina; Basque: Aktore onenaren Zilarrezko Maskorra) was one of the main awards presented at the San Sebastián International Film Festival to the Best Actress of a competing film.[1] The last of this award was given out in 2020, after which it was replaced with a gender-neutral Silver Shell for Best Leading Performance and Silver Shell for Best Supporting Performance the following year.[2]