The structural and electrical properties of some CdI 2 doped silver borophosphate glasses and glass nanocomposites of compositions 0.2CdI 2 À 0.8(0.50Ag 2 O À 0.50(xB 2 O 3 À (1 À x)P 2 O 5 )), prepared by the melt quenching method, are reported in this paper. The X-ray diffraction study reveals the amorphous nature for the compositions x = 0À0.80 and partial crystalline nature for the composition x = 1. However, the transmission electron microscopic studies reveal the presence of some crystalline phases such as CdI 2 , β-AgI, and AgPO 3 for x = 0À0.80 and β-AgI, Ag 3 BO 3 , and CdI 2 for x = 1. The FTIR spectra reveal that the BO 4 units are predominant for x = 0.20À0.50. The BO 3 unit appears beyond the composition x = 0.20, and its population increases with the increase of B 2 O 3 content. The conductivity of the compositions increases (for x = 0À0.60), and the activation energy decreases with progressive substitution of B 2 O 3 in the glass network. However, the conductivity almost saturates for B 2 O 3 rich compositions (for x = 0.60À1). The ion dynamics of the compositions as well as other physical properties such as density, glass transition temperature, etc., have been correlated with the compositional variation of BO 4 and BO 3 units.