Gajanur is a village in Talavady taluk, Erode district of Tamilnadu, India. It is also known as Dodda Gajanur. The village is located 4 km (2.5 mi) from the Tamilnadu–Karnataka border, and is 1 km (0.62 mi) south of the town of Thalavadi. Most of roads are connected to Karnataka state.