Namesakes
Lithuanian Presidents and Prime Ministers:
1 prime minister
(prime minister) Irena Degutienė 1999 
Notable Activists and Revolutionaries:
1 activist
(activist) Irena Sendler 1910-2008
Notable Athletes:
1 track
(track) Irena Szewińska 1946-2018
Notable Filmmakers:
1 director
Agnieszka Holland (a.k.a. Irena) 1948-
Notable Musicians:
1 musician
Sanah (a.k.a. Irena) 1997-
Notable Writers:
1 author
Irena Vrkljan 1930-2021
Olympic Medalists:
1 silver, 1 silver/bronze/gold
(silver) Irena Szydłowska 1972 archery - individual
(silver/bronze/gold) Irena Szewińska 1964; 1968; 1972; 1976 4x100 m relay; long jump; 100 m; 200 m; 400 m