Robert Adriaan van der Horst (Dutch pronunciation: [ˈrɔbərt fɑn dər ˈɦɔrst]; born 17 October 1984) is a Dutch former field hockey player who played as a defender and currently the assistant coach of the first men's team of Oranje-Rood.

The defender was the captain of the national teams that finished fourth at the 2008 and 2016 Olympics and won a silver medal in 2012.

[5] He wanted to leave Oranje Zwart after those eight seasons because he felt that he had so much responsibility for his team and club that it was at the expense of his own development as a hockey player.

[6] After Oranje Zwart merged in 2016 with EMHC he started playing for the newly formed club HC Oranje-Rood.

[11] During his long international career, he played in three Summer Olympics, three World Cups and six EuroHockey Championships.