Yoshitaka Iwamizu

is a Japanese long-distance runner. He competes in the 3000 metres steeplechase.

He finished fifth at the 2001 Summer Universiade in Beijing, won a silver medal at the 2002 Asian Games in Busan, Korea and finished eleventh at the 2003 World Championships in Paris. He also competed at the World Championships in 2001 and 2005 as well as the 2004 Summer Olympics without reaching the finals there.

He graduated from the Juntendo University.

Personal bests 3000 m s'chase: 8:18.93 minutes (Japanese record), 23 August 2003, Saint-Denis, France 5000m: 13:37.99 minutes, 21 May 2005, Fukuroi, Japan 10,000m: 28:17.80 minutes, 24 September 2010, Niigata, Japan