Johan Georg Frederik Ræder (16 August 1834 – 1909) was a Danish civil servant and writer.
He was born in Copenhagen as a son of Colonel Jacob Thode Ræder (1798–1853).
She died in 1874, and he then married Agnes Elise Albertha Ræder, the widow of his brother Oscar.
He advanced in the ranks here, and received the honorary title Councillor of Justice (Danish: Justitsråd).
He issued the historical work Danmark under Svend Estridsen og hans Sønner in 1871, and the judicial handbook Forsørgelse af trængende efter dansk Ret in 1892.