Georginio Wijnaldum will wear a captain's armband with the words 'One Love' and a rainbow motif for Holland's last-16 Euro 2020 tie against the Czech Republic in Hungary on Sunday.
The midfielder, who has just joined PSG from Liverpool, also said the team could walk off if they were subject to racist or homophobic abuse as Cristiano Ronaldo and Kylian Mbappe allegedly were in group games at Puskas Arena in Budapest.
Wijnaldum said the armband was partly directed at Hungary's passing of a law that forbids gay people from featuring in educational materials in schools or TV shows for those under 18.