Namesakes
Notable Actors and Entertainers:
2 actors
Göthe Grefbo (a.k.a. Ingvar) 1921-1991 
Peter Stormare (a.k.a. Ingvar) 1953-
Notable Athletes:
1 soccer
(soccer) Ingvar Jónsson 1989-
Notable Businesspeople:
1 businessperson
Ingvar Kamprad 1926-2018
Olympic Medalists:
1 bronze, 1 gold
(gold) Tore Sjöstrand (a.k.a. Ingvar) 1948 3000 m steeplechase
(bronze) Ingvar Pettersson 1964 50 km walk
Russian Grand Dukes and Tsars:
1 duke
Duke Igor (a.k.a. Ingvar) 912-945
Swedish Prime Ministers:
1 prime minister
Ingvar Carlsson 1986-1991; 1994-1996