High temperature strength of pressureless sintered TiB₂ with Cr and C additives had been investigated. The bending strength was measured for temperatures between room temperature and 1400°C in air and in argon atmosphere. The bending strength was 385MPa at room temperature and increased from 560MPa at 800°C to 620MPa at 1000°C in air. The high temperature strength in average in argon atmosphere was nearly constant in the temperature range from room temperature up to 1400°C. The fracture surfaces created in the temperature range between room temperature and 1400°C in argon atmosphere showed both transgranular and intergranular fracture modes.