Single crystals of Co-doped B1-xSrxTiO3 (Co:BST) have been grown by high-temperature solution growth technique. The dopant has significant effect on the growth parameters and considerably reduced the twin formation in the grown crystal. Bulk single crystals of dimensions 5 × 5 × 4 mm3 have been grown with optimized growth parameters. Layer growth and vein-like structure patterns, indicative of 2 D nucleation mechanism, have been observed on the grown crystals. The presence of dopant in the grown crystals was confirmed by EDX analysis. For lower doping concentration (0.1 mol%), the crystal possesses tetragonal structure and changes to cubic for higher dopant level (1 and 5 mol%) Co doping in BST increases the dielectric constant values and decreases the Curie temperature (Tc). The spontaneous polarization (Ps) value for 0.1 mol% of Co-doped BST crystal is measured to be 22 μc/cm2 and the value decreases with increasing Co concentration. © 2002 Elsevier Science B.V. All rights reserved.