Grete Griffin (née Šadeiko; born 29 May 1993) is an Estonian heptathlete. At the 2010 World Junior Championships in Moncton, Canada she placed fourth with her personal record 5705 points, just one point behind Helga Margrét Thorsteinsdóttir. In the fall of 2012, she joined Florida State University.
Achievements
Personal bests
Personal life
In August 2016, Šadeiko became romantically linked to NFL quarterback Robert Griffin III. Sadeiko and Griffin became engaged on 13 May 2017. Their first daughter was born on 2 July 2017. The couple married on 10 March 2018. Their second daughter was born in September 2019 and their third daughter was born in January 2023.
Šadeiko's older sister Grit Šadeiko is also a heptathlete.