1) English girl name 
Sydni is an English name for girls. The meaning is `wide meadow` The name Sydni is most commonly given to American girls. What do they use in other countries? Sidney (English) Sydney (English) The name sounds like: Sidni, Sydnie Similar names are: Sydel, Sidnie, Sydonia, Sydona, Sonni, Sunni, Sydney, Sydnee, Cydnie