Hyder \hyd-der\ as a boy's name is a variant of Haidar (Arabic), and the meaning of Hyder is "lion".
The baby name Hyder sounds like Heder, Hadar, Hadur, Haydar and Haider. Other similar baby names are Ryder, Dyer, Eder, Jader, Keder, Nader, Peder, Rayder, Rider, Tyler and Wyler.