Dyan Neille Buis (born 30 November 1990 in Riversdale, Western Cape) is a South African Paralympic sprint runner and long jumper.

[1] In 2012, Buis was a student at Global University in Cape Town, RSA, in Religious and Theological Studies, and trained at Maties Helderberg Disabled Sports Club in Stellenbosch.

He competed at the 2012 Paralympic Games, where he won a bronze medal in the men's long jump with a world record time for his class of 6.48 metres.

In 2016, at the 2016 Paralympics, Buis ran a 54.66 in the second heat to qualify third for the finals behind Dixon de Jesus Hooker Velasquez and Weiner Javier Diaz Mosquera both from Colombia.

The second place went to China's Jianwen Hu and third to Colombia's Weiner Javier Diaz Mosquera.