Martine Soffiatti Grael[a] (born 12 February 1991) is a Brazilian sailor in the 49er FX class.

Her brother Marco and uncle Lars also sailed in the Olympics.

[6] She sailed with Team AkzoNobel in the 2017–18 Volvo Ocean Race.

[7] In 2024, Grael was designated captain of the debuting Brazilian team that would compete at the SailGP championship.

This biographical article related to sailing in Brazil is a stub.