Namesakes
Hall-of-Famers:
1 ice hockey
(ice hockey) Teemu Selänne (a.k.a. Ilmari) 2017 
Nobel Prize Winners:
1 chemistry
(chemistry) Artturi Ilmari Virtanen 1945
Notable Athletes:
1 ice hockey
(ice hockey) Teemu Selänne (a.k.a. Ilmari) 1970-
Notable Scientists and Inventors:
1 chemist
Artturi Ilmari Virtanen 1895-1973
Olympic Medalists:
2 gold, 2 silver/bronze
(gold) Paavo Yrjölä (a.k.a. Ilmari) 1928 decathlon
(gold) Ilmari Salminen 1936 10000 m
(silver/bronze) Raimo Helminen (a.k.a. Ilmari) 1988; 1994; 1998 ice hockey
(silver/bronze) Teemu Selänne (a.k.a. Ilmari) 1998; 2006; 2010; 2014 ice hockey