The 2017 CS Tallinn Trophy was a senior international figure skating competition held on November 21–26, 2017, at the Tondiraba Ice Hall in Tallinn, Estonia.

The senior categories were part of the 2017–18 ISU Challenger Series.

[1] Medals were awarded in men's singles, ladies' singles, pair skating, and ice dance.

The International Skating Union published the full preliminary list of entries on 31 October 2017.

Alexandrovskaya/Windsor won their first senior-level international title.