This study presents the dielectric properties of Ba2Zr2Si3O12 ceramics, synthesized using the solid state method. The cubic crystal structure of Ba2Zr2Si3O12 ceramics was conclusively verified through the analysis of XRD patterns and subsequent structural refinement. Refined lattice parameters of a = b = c = 10.23178 Å were found, with a corresponding unit cell volume of V = 1071.159026 Å3. The grain microstructure of the ceramics was characterized using SEM, which showed density of 97.6% for the Ba2Zr2Si3O12 ceramic. The Si-O bond valences (VSi-O) were found to be closely related to the τf of the Ba2Zr2Si3O12 ceramics. The microwave dielectric properties of the Ba2Zr2Si3O12 ceramics sintered at 1490°C were ascertained to be εr = 15.08, Q × f = 14885 GHz (f = 9.9 GHz), and τf = −78.6 ppm/°C.