Emperor Go-Yōzei (後陽成天皇, Go-Yōzei-tennō, December 31, 1571 – September 25, 1617) was the 107th Emperor of Japan, according to the traditional order of succession. Go-Yōzei's reign spanned the years 1586 through to his abdication in 1611, corresponding to the transition between the Azuchi–Momoyama period and the Edo period.

This 16th-century sovereign was named after the 9th-century Emperor Yōzei, and go- (後), translates as later, and thus, he could be called the "Later Emperor Yōzei". The Japanese word go has also been translated to mean the second one, and in some older sources, this emperor may be identified as "Yōzei, the second", or as "Yōzei II".