Melaseithalai is a village in Ottapidaram taluk of Thoothukudi District, Tamil Nadu, India.

The village comes under Vilathikulam (state assembly constituency) and Thoothukudi (Lok Sabha constituency).

Melaseithalai is located 25 km away from the district headquarters on the National Highway 45B.

The village comes under the administrative control of Jegaveerapandiyapuram panchayat, Ottapidaram taluk, Thoothukudi district, Tamil Nadu, India.

[1] The village also has a Sub-Primary Health Centre functioning under Eppodum vendran Primary Health Centre (PHC)[2]