Family name Sydna (Sydna 
) , globally, is a very rare cognomen. The family name Sydna is habitual in Myanmar, where it is a very rare surname, Israel, and Mexico, where it is an extremely rare surname. More prevalently, Sydna is the forename as well as the last name.
Amos, Gibson, Little, Taylor, Odland, Wexler, Mariani, Barocco, Konstin, Delucia, Edwards, Hampton, Holbert, Verross, Forrest, Marshall, Shermett, Spancake, Peterson, Franklin, Williams, Mersereau, Dexter, Kelley, Burton, Becker, Paul, Pope, Reed, Hall, Webb, Uteg, Silva, Souza, Stout, Boyer, Sebastian, Bundy, Lopes, Jones, Martin, Mcvane, Santos, Soares, Arnold, Aruejo, Caples, Cooper, Rocha, and Worthington