Worldwide, Reignier (Regno 
, Reignier 
) is a rare predominantly boy's, but very seldom feminine first name. The first name Reignier is habitual in Tanzania, where it is a rare boy's name, Italy, where it is a very rare largely male, but seldom female name, and Philippines, where it is a very rare male name. More prevalently, Reignier is the last name as well as the forename.
Reignier is also a name for the fictitious and mythical characters: Regno D'Ungheria (The Kingdom Of Hungary) , the operatic character in the opera Il pomo d'oro by Antonio Cesti and Regno Di Boemia (The Kingdom Of Bohemia) , the operatic character in the opera Il pomo d'oro by Antonio Cesti.