Namesakes
Øystein I
(m) c. 1088-1123 
Norwegian Kings and Queens 1103-1123
Øystein II
(m) c. 1125-1157
Norwegian Kings and Queens 1142-1157
Eysteinn Erlendsson
(a.k.a. Øystein) (m) ?-1188
Saints
Øystein Pettersen
(m) 1983-
Olympic Medalists 2010 cross-country skiing (gold)