Erik Johansson Vasa (c. 1470 – 8 November 1520) was a Swedish noble and the Lord of Rydboholm Castle in Roslagen.

[1][2] He was born around the year 1470 to Johan Kristiernsson Vasa and Birgitta Gustafsdotter Sture in a village named Örby in the province of Uppland, Sweden.

When the Danes, led by King Christian II of Denmark, conquered Sweden and seized the capital city Stockholm in 1520, several members of the Sture party were executed in the Stockholm Bloodbath in November of that year.

[3][4] His first son, Gustav Eriksson Vasa, had escaped from Denmark some time before this event, and survived.

His reign marked the final secession of Sweden from the Danish dominated Kalmar Union which had dated from 1397.