Soichi Noguchi (野口聡一 Noguchi Sōichi, born 15 April 1965 in Yokohama, Japan) is a Japanese aeronautical engineer and a JAXA astronaut. His first spaceflight was as a Mission Specialist aboard STS-114 on 26 July 2005 for NASA's first "return to flight" Space Shuttle mission after the Columbia disaster. He is currently in space as part of the Soyuz TMA-17 crew and Expedition 23 to the International Space Station.
Soichi Noguchi was a Boy Scout.
He is married and has three children.