Baydar is a surname of Turkish origin meaning lion. Notable people with the surname are as follows:

Alaattin Baydar (1901–1990), Turkish football player Mehmet Baydar (1924–1973), Turkish assassinated diplomat Metin Lütfi Baydar (born 1960), Turkish medical scientist Oya Baydar (born 1940), Turkish writer Yavuz Baydar, Turkish journalist

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