Sittichai Suwonprateep (born November 17, 1980, in Samut Prakan) is a track and field sprint athlete who competes internationally for Thailand and is a naval officer with the Royal Thai Navy.
Suwonprateep represented Thailand at the 2008 Summer Olympics in Beijing. He competed at the 4 ÃÂ 100 metres relay together with Siriroj Darasuriyong, Sompote Suwannarangsri and Apinan Sukaphai. In their qualification heat they placed fifth in a time of 39.40 seconds and they were eliminated.