In this study, in situ Al₂O₃-reinforced Ti₃Al composite was fabricated after 8 h of milling and sintering at 850 °C. A mixture of TiO₂ and Al powders were mechanically milled in a planetary mill, cold-compacted and sintered under a protected argon atmosphere. The microstructure and microhardness of the Al₂O₃ embedded in Ti₃Al matrix at both room and elevated temperature has been reported. The obtained results showed that the Ti₃Al/Al₂O₃ composite was successfully synthesized via the powder metallurgy method. Ti₃Al phase and Al₂O₃ particles were formed after 8 h of milling and sintering at 850 °C. The microstructure formation of round and uniformly distributed Al₂O₃ particles in the Ti₃Al matrix improved the microhardness of the composite. At normal temperature, the microhardness of the material measured about 11.5 GPa. Meanwhile, at elevated temperatures, from 600 to 800 °C, it decreased from 4.18 GPa to 3.15 GPa.