Ren Longyun

Ren Longyun (born 12 October 1987 in Minhe, Qinghai) is a Chinese long-distance runner who specializes in the marathon.

He finished ninth (in the 10,000 metres) at the 2006 World Junior Championships and competed at the 2007 World Championships. He also finished second in the 2007 Beijing Marathon. Additionally, he represented his country at the 2008 Summer Olympics.