Sander Gillis is a Belgian voice actor known for his work in Flemish-dubbed versions of major film productions. Born in 1992, Gillis began his media career in 2012 as a presenter for the youth channel Ketnet before moving into radio broadcasting at MNM, where he co-hosts the morning show. His voice acting career includes significant work as a dubbing actor for animated and family films.

Gillis is most recognized for providing the Flemish voice of the title character in the Sonic the Hedgehog film series. He voiced Sonic in the 2020 film Sonic the Hedgehog, its 2022 sequel Sonic the Hedgehog 2, and the 2024 film Sonic the Hedgehog 3. This recurring role across the trilogy represents a major credit in his dubbing portfolio. Beyond his work in film dubbing, Gillis has also worked as a television presenter and host of a weekly podcast focused on a popular television series.