Haydar \ha(y)-dar\ as a boy's name is a variant of Haidar (Arabic), and the meaning of Haydar is "lion".

The baby name Haydar sounds like Hadar, Hadur, Hyder and Haider. Other similar baby names are Haydan, Faydor, Haddan, Hamar, Hammar, Hayden, Haydon, Haydn, Kadar, Qadar and Rayder.