Mateus dos Santos Castro (born 11 September 1994) is a Brazilian footballer who plays for J1 League club Nagoya Grampus.
On 6 January 2019, Mateus signed for Nagoya Grampus.
On 1 August 2023, Castro joined Saudi Pro League club Al-Taawoun.
On 22 January 2025, Castro returned to Japan and signed for Nagoya Grampus.
.