Kustaa
Kustaa is a Finnish masculine name derived from Gustav. Notable people named Kustaa include:
- Arvo Kustaa Halberg, leader of the Communist Party USA
- Kaarlo Kustaa Lappalainen, Finnish sport shooter
- Kalle Kustaa Paasia, Finnish gymnast who competed in the 1908 Summer Olympics
- Kustaa Pihlajamäki, Finnish freestyle wrestler and Olympic champion
- Kustaa Rovio, Finnish Communist politician who fled to the Russian SFSR after the Finnish Civil War