Hiroyasu Shimizu (清水宏保 in Japanese, born February 27, 1974 in Obihiro, Hokkaidō, Japan) is a Japanese speed skater. He has an Olympic Gold medal from 1998 in the 500m and his win made him a hero in his home country. He currently holds the world record for the 100m speed skating event in 9.43 seconds. He formerly held the 500m record (34.32) but was later beaten by fellow Japanese skater Joji Kato.
He is well known for his physical handicaps, with a height of only 162 cm, and he has an asthma, for which he was featured in a commercial of an asthma drug of GlaxoSmithKline.