Tiruttani is a town in the Tiruvallur district, a suburb of Chennai within the Chennai Metropolitan Area, located in the state of Tamil Nadu, India. The town is renowned for the Tiruttani Murugan Temple, which is one of the Arupadaiveedu and is dedicated to Kartikeya (Murugan). Tiruttani was added to the Chennai Metropolitan Area in October 2022. The name Tiruttani is of Tamil origin. During the formation of Andhra state on 1 November 1953, Tiruttani was part of Chittoor district of Andhra Pradesh state and continued to be there until 1960. On 1 April 1960, with the Andhra Pradesh and Madras Alteration of Boundaries Act of 1959, Tiruttani, Pothatturpettai, Pallipattu and Ramakrishnarajapettai assembly areas of Andhra Pradesh are transferred to Madras state (now Tamil Nadu) in exchange for smaller area on linguistic basis. Tiruttani is located at . It has an average elevation of . According to the 2011 census, Tiruttani had a population of 64,781 with a sex ratio of 1,003 females for every 1,000 males, well above the national average of 929. A total of 4,656 were under the age of six, constituting 2,441 males and 2,215 females. Scheduled Castes and Scheduled Tribes accounted for 12.42% and 2.4% of the population respectively. The average literacy of the town was 75.32%, compared to the national average of 72.99%. The town had a total of 11,122 households. There were a total of 16,451 workers, comprising 462 cultivators, 715 main agricultural labourers, 550 in household industries, 12,648 other workers, 2,076 marginal workers, 44 marginal cultivators, 180 marginal agricultural labourers, 202 marginal workers in household industries and 1,650 other marginal workers. As per the religious census of 2011, Tiruttani had 91.85% Hindus, 6.35% Muslims, 1.61% Christians, 0.02% Sikhs, 0.04% Buddhists, 0.06% Jains, 0.06% following other religions and 0.% following no religion or did not indicate any religious preference.