Nina van Koeckhoven (born 6 October 1983) is a Belgian freestyle swimmer and triathlete.

She won two medals at the 2000 European Aquatics Championships and participated in the 2000 Summer Olympics in four events, but did not reach the finals.

Her first international success was a bronze medal in the 200 m freestyle at the 1997 European Youth Olympic Festival in Lisbon.

From 1999 she competed in regular competitions and reached the finals at the 1999 European Aquatics Championships, again in the 200 m freestyle.

[2] In 2001, she won one more bronze medal, at the FINA Swimming World Cup in Paris, and set a national record in the 200 m freestyle (2'00"90) that stood for at least 10 years.