The musician's album, Homecoming: A Scottish Fantasy, entered at number 19. She is the first British classical violinist to crack the UK Top 20 since Vanessa Mae in 1995.
Benedetti said the achievement was unexpected but she was "absolutely thrilled" to be in the albums chart.
She said: "This is a deeply personal recording - inspired by Bruch's Scottish Fantasy, the project took me deep into the heart of Scottish culture.
"I hope the music, in all its diversity, is providing some uplift and pleasure."
Benedetti, from West Kilbride, shot to fame after becoming BBC Young Musician of the Year aged 16.
Her latest achievement comes a week after she won the Sir Charles Groves Prize for her work on projects such as Sistema Scotland and the BBC's new Ten Pieces.
The prize is given for an "outstanding contribution to the cultural life of the UK"