No systematic study of the nitration of chromones appears to have been carried out previously, though a few naturally occurring flavones have been nitrated. In the present work, nitration of 7-hydroxy-2-methyl-chromone and 7-hydroxyflavone and their methyl ethers has been studied. The mononitro-derivatives have been found to be 8-nitro compounds while the di-derivatives were 6∶8-dinitro products. 7-Hydroxyflavone gave also a trinitro derivative which was found to be 7-hydroxy-6 ∶ 8 ∶ 4′-trinitroflavone. The constitutions of the nitro compounds were proved by alkaline hydrolysis.