Orvokki is not a popular first name. It is more often used as a girl (female) name.
First names and their meaning - Page 11819
Orzo
Orzo is not a popular first name.
Osaba
Origin: Basque. 
Osaba is not a popular first name. It is more often used as a boy (male) name. 
Osabaritz
Origin: Basque. 
Osabaritz is not a popular first name. It is more often used as a boy (male) name. 
Osachi
Osachi is not a popular first name.
Osburn
Meaning: Divine warrior. 
Osburn is not a popular first name. It is more often used as a boy (male) name. 
Óscar
Oscar or Oscar is a masculine given name of Germanic origin, meaning 'divine spear'. In the Catholic sanctoral, this name […]
Oscarina
Oscarina is not a popular first name. It is more often used as a girl (female) name.
Oscarre
Oscarre is not a popular first name.
Osckar
Origin: Scottish-Gaelic. 
Meaning: Jumping fighter. 
Osckar is not a popular first name. It is more often used as a boy (male) name.