Sepedu is a village in the Tiruvallur district of Tamil Nadu, India. It is located in the Gummidipoondi taluk.

According to the 2011 census of India, Sepedu has 61 households. The effective literacy rate (i.e. the literacy rate of population excluding children aged 6 and below) is 48.56%.

Demographics (2011 Census)

	Total	Male	Female
Population	231	113	118
Children aged below 6 years	23	8	15
Scheduled caste	205	101	104
Scheduled tribe	0	0	0
Literates	101	52	49
Workers (all)	76	71	5
Main workers (total)	76	71	5
Main workers: Cultivators	3	3	0
Main workers: Agricultural labourers	60	55	5
Main workers: Household industry workers	0	0	0
Main workers: Other	13	13	0
Marginal workers (total)	0	0	0
Marginal workers: Cultivators	0	0	0
Marginal workers: Agricultural labourers	0	0	0
Marginal workers: Household industry workers	0	0	0
Marginal workers: Others	0	0	0
Non-workers	155	42	113